Abrégé

A white concrete surface protection material as well as a preparation method therefor and a construction method thereof. The technical key points are as follows: the white concrete surface protection material comprises in parts by weight 20-30 parts of a composite whitening agent, 15-25 parts of a pure acrylic emulsion, 5-10 parts of talcum powder, 3-5 parts of mica, 0.1-2 parts of a waterproof agent, 0.1-0.5 part of a defoaming agent, 0.1-0.8 part of a wetting agent, 0.1-3 parts of propylene glycol, 0.1-0.3 part of cellulose, 5-10 parts of a silicone resin emulsion, 0.1-0.5 part of a preservative, 0.1-0.5 part of a thickening agent and 30-50 parts of water, wherein the composite whitening agent is obtained by means of ion co-precipitation of calcium carbonate and titanium dioxide, and the weight ratio of calcium carbonate to titanium dioxide is (5-8):1. The white concrete protection material is provided aiming at the problem of white concrete being prone to color changes caused by acid-base erosion and ultraviolet irradiation during long-term use, and the composite whitening agent prepared by co-precipitation of calcium carbonate and titanium dioxide greatly improves the whitening effect and the hydrophobic performance of the white concrete protection material.

Classes IPC  ?

• C09D 7/62 - Adjuvants non macromoléculaires inorganiques modifiés par traitement avec d’autres composés
• E04F 13/02 - Revêtements ou enduits, p. ex. pour murs ou plafonds en matériau plastique, durcissant après la pose, p. ex. en plâtre
• C09D 133/00 - Compositions de revêtement à base d'homopolymères ou de copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un seul radical carboxyle, ou ses sels, anhydrides, esters, amides, imides ou nitrilesCompositions de revêtement à base de dérivés de tels polymères

Abrégé

Provided in the present invention is a hydraulic tamper for large-area foundation soil reinforcement. The hydraulic tamper comprises a housing, wherein the bottom of the housing is connected to a tamping plate; a hydraulic rod connected to the top of the housing; and a tamping hammer slidably connected to a lower end of the hydraulic rod. An inner cavity of the tamping hammer is provided with a sliding channel for causing the hydraulic rod to slide therein. The top and bottom of one side wall of the tamping hammer are respectively provided with air outlets, and the air outlets both communicate with the sliding channel, and also communicate with each other by means of a communication pipe. In a reciprocating motion process of the hydraulic rod, an elastic compression assembly compresses air in an inner cavity of the sliding channel so that air at an upper and a lower end of the inner cavity of the tamping hammer are replaced with each other, thereby consuming an impact force of the tamping hammer on the hydraulic rod by means of doing work. In the process of the hydraulic rod pressing down, the intensity of pressure of the inner cavity of the sliding channel located below the elastic compression assembly increases to weaken the tendency of the hydraulic rod sliding down along the sliding channel, such that the tamping hammer has greater dynamic potential energy. Thus, the device can balance the relationship between impact force buffering and the tamping effect while buffering and protecting an oil cylinder.

Classes IPC  ?

• E02D 3/068 - Appareils vibrants fonctionnant avec des systèmes impliquant des masses en mouvement alternatif

Abrégé

An intelligent paving system based on laser guidance. A paver (2) is used for traveling on a road (1) and paving a coating layer (11), and a laser receiving part (4) is arranged on the paver (2); a plurality of laser emitting parts (3) are arranged on the sides of the road (1), and three adjacent laser emitting parts (3) are all positioned in a reference surface (12) parallel to the top surface of the coating layer (11); a calculation part takes the laser receiving part (4) as an origin of a coordinate system, and receives a laser beam (31) by means of the laser receiving part (4) to derive coordinates of the three laser emitting parts (3), and further obtain the reference surface (12) flush with the coating layer (11) by means of derivation; the calculation part derives the thickness and the slope of the coating layer (11) according to the reference surface (12) to provide a control instruction for the paver (2); and the paver (2) adjusts the thickness and the leveling angle of a paved material according to the control instruction, so as to adapt to a sharp bending part of the road (1) where the coating layer (11) is inclined in both the length direction and the width direction.

Classes IPC  ?

• E01C 19/18 - Dispositifs pour répartir les matériaux d'empierrement mélangés à des liants, p. ex. au ciment, au bitume, sans effet de consolidation ou d'aplanissement
• E01C 23/01 - Dispositifs ou moyens auxiliaires préalables à la mise en place d'un nouveau revêtement ou pour en vérifier la configuration, p. ex. gabarits, supports de guide d'arasementApplications des appareils de mesure, d'indication d'enregistrement de la configuration de surface d'un revêtement existant, p. ex. profilographes
• G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
• G01B 11/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la rugosité ou l'irrégularité des surfaces

Abrégé

The present invention relates to a prefabricated box girder bridge construction monitoring method and a related device. The method comprises: acquiring a BIM model of a prefabricated box girder bridge, and extracting model coordinate data; configuring a secondary development environment for bridge modeling software of the Benthley; on the basis of the secondary development environment, performing segmentation processing on the model coordinate data to divide the prefabricated box girder bridge into a plurality of segments; acquiring theoretical coordinate data and measured coordinate data of an elevation control point of a current pouring segment, and calculating a control point relative elevation error of the current pouring segment; according to a segmental thresholding-based successive rectification strategy, the control point relative elevation error and a preset rectification threshold, correcting and adjusting the control point relative elevation error of the current pouring segment to generate segment rectification information; and generating a visual theoretical elevation control line according to theoretical coordinate data of elevation control points of all segments, and generating a visual rectification elevation control line according to the segment rectification information. The intelligent monitoring of construction of the prefabricated box girder bridge is realized.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

A durability test system for a reinforced concrete structure under marine multi-factor coupling erosion, comprising test compartments (1), a middle connecting member (2), sealed compartments (3), a water transport mechanism (4), positioning members (5), lifting/lowering driving parts (6), longitudinal embedding grooves (7), and transverse communication grooves (8). The bottoms of the sealed compartments (3) fit the transverse communication grooves (8), so that the interiors of the transverse communication grooves (8) are in a sealed state. According to the test system, the communication states of the interiors of the transverse communication grooves (8) are controlled, and in the test process of the influences of changes of water level change areas on reinforced concrete specimens (9) on the reinforced concrete specimens (9) in the same corrosive ion environment, the transverse communication grooves are (8) are in communication to ensure the communication between the adjacent test compartments (1), so that environmental aqueous solutions where the reinforced concrete specimens (9) under comparison test are located are always kept consistent, thereby improving the accuracy of test results; moreover, water is injected into the two test compartments (1), and water levels are changed at the same time, so that test preparation and test working processes are reduced, and the uniformity of invariant environmental factors other than variables is improved.

Classes IPC  ?

• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
• G01N 3/56 - Recherche de la résistance à l'usure ou à l'abrasion

Abrégé

The present invention provides a replacement device for treating a salinized soil roadbed of a highway. The replacement device comprises a carrier having a movement assembly, the carrier being provided with a primary ground breaking device, a secondary soil turning and material moving device, and a replacement and discharging device. The primary ground breaking device is provided with a scarification assembly. The secondary soil turning and material moving device is provided with a soil turning shovel. The soil turning shovel is arranged on the side of the carrier. The replacement and discharging device is arranged on the carrier. According to the present invention, the primary ground breaking device first breaks a salinized road section and divides the entire salinized road section into multiple segments to form small blocks of road surface and small blocks of soil, and then the secondary soil turning and material moving device pushes the broken salinized road surface to the two sides of the road at one time, so as to quickly form a road section to be paved. The device is simple and convenient to use, the working efficiency is high, the manufacturing cost is low, facilitating easy production and wide application.

Classes IPC  ?

• E01C 3/04 - Fondations réalisées par stabilisation du sol
• E02D 3/00 - Amélioration ou conservation du sol ou de la roche, p. ex. conservation du permagel
• E02F 5/32 - Outils à défoncer
• E02F 3/76 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analoguesDispositifs de nivellement

Abrégé

The present invention provides a slope supporting device which is of a grid-shaped structure formed by tiling a plurality of supporting blocks. Each supporting block comprises: a rectangular block having a hollow-out middle part; two first splicing blocks respectively fixedly arranged on two adjacent sides of the rectangular block, a T-shaped slot being formed in the side of each first splicing block away from the rectangular block; two second splicing blocks respectively fixedly arranged on other two adjacent sides of the rectangular block, each second splicing block being a T-shaped snap-in block snap-fitted to a T-shaped slot, and an anchor hole being formed in each second splicing block in a penetrating mode; and two anchor rods respectively inserted into the anchor holes so as to fix the supporting block on the slope. The supporting block of the present invention can better adapt to the gradient change of the slope, thereby effectively reducing the requirement for the flatness of the slope during construction, and further improving the construction efficiency.

Classes IPC  ?

• E02D 17/20 - Stabilisation de talus ou de rampes

Abrégé

A general steel sleeve structure of a multi-specification shield machine and a use method thereof. The general steel sleeve structure comprises: a sleeve body (1) that is of a cylindrical structure having an opening end, a supporting frame (11) being provided at the bottom of the sleeve body (1); multiple telescopic mechanisms (2) that are provided on the inner wall of the sleeve body (1) in the circumferential direction, each telescopic mechanism (2) having one end fixed on the inner wall of the sleeve body (1) and the other end being a free end, and the telescopic mechanism (2) performing telescoping motion in the radial direction of the sleeve body (1); multiple airbags (3) that are provided on the inner wall of the sleeve body (1) in the circumferential direction, an air inflation device being provided to inflate the airbags (3); feed pipes (4) that enable the inside and outside of the sleeve body (1) to be communicated with each other and are used for feeding materials into the sleeve body (1); and a reaction frame (5) that is provided at one end of the sleeve body (1), the reaction frame (5) being of a triangular support structure as a whole.

Classes IPC  ?

• E21D 9/06 - Exécution en utilisant un bouclier de percement

Abrégé

A protective device for high-altitude welding construction of a large bridge high-strength steel box-shaped arch rib, comprising: a supporting framework (1), which is integrally configured in an arch structure, and a top end of which is provided with a slope structure (11); a protective railing (2), which is arranged at the top end of the supporting framework (1) and is arranged around the top end of the supporting framework (1); a ladder (3), which is fixedly arranged at one end of the supporting framework (1) and is vertically arranged; and a coating structure (4), which coats the supporting framework (1), wherein a joint between two box-shaped arch ribs is positioned in an opening of the arch structure, and the coating structure (4) shields the device from wind and rain. The box-shaped arch ribs pass through the arch structure, the joint between the two box-shaped arch ribs is positioned in the opening of the arch structure, and a welding area is positioned inside the protective device, so that wind and rain can be prevented, the environmental temperature and humidity of a soldering area can be effectively controlled, powerful conditions are provided for high-strength steel welding, the welding quality is guaranteed, and the construction efficiency is improved.

Classes IPC  ?

• E01D 21/00 - Procédés ou appareils spécialement adaptés pour ériger ou assembler des ponts
• E01D 2/04 - Ponts caractérisés par la section transversale de la structure portante de la travée du type à poutre en caisson
• E04B 1/24 - Structures comportant des éléments porteurs allongés, p. ex. colonnes, poutres, ossatures les pièces porteuses étant métalliques
• E04G 1/06 - Échafaudages reposant principalement sur le sol composés essentiellement d'éléments allongés dans une seule dimension, p. ex. poteaux, mâts en treillis, avec ou sans parties terminales de forme particulière, reliés entre eux par tout moyen approprié les éléments étant exclusivement des poteaux, tiges, poutres ou autres pièces de même forme et de section simple comprenant des éléments avec des portions en forme de tiges ou tubes s'adaptant bout à bout avec ou sans pièces de raccordement séparées

Abrégé

A hydration temperature rise inhibiting mineral admixture for concrete, and a preparation method therefor. The admixture comprises the following components in parts by mass: 40-70 parts of a porous mineral admixture, 20-40 parts of a composite hydration temperature rise inhibitor, 5-20 parts of a superabsorbent polymer, 3-8 parts of a chelating agent, and 3-8 parts of a permeation enhancer. By means of a combined use of a modified protein-based hydration temperature rise inhibitor and a reaction-endothermic ammonia-based hydration temperature rise inhibitor, the purpose of simultaneously delaying a hydration reaction of cement and reducing the highest point of a temperature peak of the hydration reaction is achieved, and concrete shrinkage is significantly reduced by means of a mixture composed of sodium polyacrylate and polyacrylamide. The admixture can significantly reduce the hydration temperature rise of concrete and temperature shrinkage caused by the hydration temperature rise, and can further significantly reduce autogenous shrinkage and drying shrinkage of the concrete, without reducing the strength and durability of the concrete.

Classes IPC  ?

• C04B 24/32 - Polyéthers, p. ex. polyéther de glycol et d'alkylphénol
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C04B 24/14 - PeptidesProtéinesLeurs dérivés

Abrégé

A hoisting method for an entire large diameter variable circular cross section steel bar segment (1), where an adjustable disc-shaped lifting tool (2) is utilized, and shape and deformation characteristics of the large-diameter variable circular cross section steel bar segment (1) are sensibly taken into account; first, arced section main steel bars having lower deformation are connected, and after most of the stress of a main lifting hook is unloaded, the form of the steel bar segment (1) is restored, and then connection to main steels bars having greater linear section deformation is performed. By this means, no other measures for reducing deformation when hoisting the entire steel bar segment (1) are necessary, material is saved, and the speed of connecting steel bars is increased.

Classes IPC  ?

• B66C 1/22 - Organes rigides, p. ex. en forme d'équerre, dont une partie s'engage sous la chargeCrochets de grues
• B66C 13/08 - Dispositifs auxiliaires pour commander les mouvements des charges suspendues ou pour empêcher le câble de prendre du mou pour déposer les charges selon un orientement ou dans une position donnés

Abrégé

The present invention relates to a concrete pouring anti-segregation flexible chain barrel. The concrete pouring anti-segregation flexible chain barrel comprises at least two chain barrel units which are vertically connected. Each chain barrel unit comprises a barrel body and flanges; the barrel body has a funnel-like structure having a circular upper portion and a flat lower portion and is made of a flexible rubber material, the cross section of the upper half thereof being circular, the lower half thereof being flat, the inner walls of two opposite sides being attached to each other, and the top opening thereof being provided with an annular turned edge which is turned outward by a certain width; the flanges include an upper flange and a lower flange, the upper flange being pressed on the top surface of the turned edge of the barrel body, the lower flange sleeving the barrel body and abutting against the bottom surface of the turned edge, and the upper flange and the lower flange being connected by means of bolts and clamping and fixing the turned edge. The flanges of the upper and lower chain barrel units are connected by means of rigging or hanger rods. The present invention allows concrete to flow in a constrained state, thus avoiding segregation.

Classes IPC  ?

• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés

Abrégé

A connecting-type guide pipe device for underwater concrete pouring, comprising at least two guide pipes (2) that are detachably connected together and can communicate with one another; each guide pipe (2) is detachably connected to an adjacent guide pipe (2) by means of a connecting structure (3), and the connecting structure (3) comprises a first bearing (51) provided on the outer wall of one guide pipe (2) and a second bearing (52) provided on the outer wall of the other guide pipe (2); an end part of the first bearing (51) is connected to an inner sleeve (61), and an end part of the second bearing (52) is connected to an outer sleeve (62); the inner sleeve (61) and the outer sleeve (62) are matchingly sleeved together; and the first bearing (51) and the second bearing (52) are oppositely combined so that each guide pipe (2) is detachably connected to the adjacent guide pipe (2). According to the connecting-type guide pipe device for underwater concrete pouring, a drawing embedded fastening connecting means is employed, thus adjacent guide pipes (2) are convenient and fast to mount and dismount. The connecting-type guide pipe device is economical and practical, and is used in an underwater concrete pouring process so that the guide pipes (2) can be rapidly connected, mounted and dismounted. In addition, the device has good water sealing performance.

Classes IPC  ?

• F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
• E02D 15/06 - Mise en place de béton sous l'eau

Abrégé

Provided is a pre-formed marine fixed platform, comprising a pre-formed platform main body (1), with several watertight holds (4), ballast tanks (3) and gravel holds (5) arranged in the main body (1) and separated by means of a hold partition wall (2), wherein the ballast tanks (3) are located at the bottom of the main body (1), the watertight holds (4) are located above the ballast tanks (3), a gravel channel (6) communicating with the outside of the main body (1) is provided at the bottom of the gravel holds (5), several positioning devices are respectively provided along the periphery of the main body (1), and a positioning pole (8) capable of extending downwards beyond the bottom of the main body (1) is respectively provided on each positioning device. Further provided is a method of installing a pre-formed marine fixed platform. The platform is arranged conveniently and quickly, making the foundation levelling easy with a high evenness.

Classes IPC  ?

• E02B 17/00 - Iles artificielles montées sur pilotis ou supports similaires, p. ex. plates-formes sur pieds extensiblesProcédés de construction de celles-ci
• E02B 17/04 - Équipement spécialement conçu pour élever, abaisser ou immobiliser la plate-forme de travail par rapport à la structure de support