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Fabricated cement board force transmission component, cement board and preparation and construction method of cement board

A cement board and assembly technology, which is applied in the direction of manufacturing tools, pavements paved with prefabricated blocks, roads, etc., can solve the problem of damage to the surface texture flatness of prefabricated slabs, the decline of prefabricated slab load transfer performance, and the operation space should not be too large, etc. problems, to achieve the effect of ensuring load transfer capacity, ensuring flatness and aesthetic requirements, and ensuring flatness and aesthetics

Active Publication Date: 2021-08-06
RES INST OF HIGHWAY MINIST OF TRANSPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: the distance between the joints between the panels and the flatness of the panel surface require that the operating space for the installation of the force transmission member should not be too large, and there are many joints in the prefabricated panels, and the force transmission components with slots on the upper surface are arranged in a large area. Under the circumstances, it is bound to destroy the surface texture and overall flatness of the prefabricated slab; if the thin layer of concrete covered on the surface of the notch is not handled properly, the concrete around the force-transmitting member will be easily cracked and broken under the action of load and environment, and the exposed edges and corners of the steel force-transmitting member It will have a serious impact on the high-speed vehicle tires on the pavement. In addition, the exposed force-transmitting components will also rust quickly under rainwater immersion, causing a rapid decline in the load-transfer performance between prefabricated panels.

Method used

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  • Fabricated cement board force transmission component, cement board and preparation and construction method of cement board
  • Fabricated cement board force transmission component, cement board and preparation and construction method of cement board
  • Fabricated cement board force transmission component, cement board and preparation and construction method of cement board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] refer to Figure 1-5As shown, the present embodiment provides an assembled cement board force transmission member, including a guide plate 3, a number of launch sleeves 5 fixedly connected vertically with the guide plate 3, the guide plate 3 is provided with a number of guide holes 4, and the launch sleeve 5 It communicates with the guide hole 4, an elastic dowel assembly is provided in the launching sleeve 5, and the side of the guide plate 3 far away from the launching sleeve 5 is provided with a blocking portion for blocking the elastic dowel assembly, and the blocking portion is away from the launching sleeve 5 by one A targeting sleeve 10 is arranged on the side, and the targeting sleeve 10 is located on one side of the moving direction of the elastic dowel assembly and arranged in line with the launching sleeve 5 .

[0042] The elastic dowel assembly is arranged in the launching sleeve 5, and the blocking part is used to block the elastic dowel assembly. When asse...

experiment example

[0064] Design prefabricated slabs with upper opening and lower opening with the same plate thickness, calculate the maximum stress, strain and vertical displacement of the joints of the prefabricated slabs under the action of the standard shaft load BZZ-100 through finite element software, and compare with the joint structure of this embodiment The mechanical performance is compared, and the three design schemes and their analysis results are shown in Table 1.

[0065] Table 1 The force analysis and calculation results of the joints of precast slabs under the influence of three types of load-transfer structures

[0066]

[0067] According to the above data analysis, the stress and strain levels of the cement boards of this application at the joints are lower than those of the upper and lower open prefabricated boards. The maximum vertical deformation of the joints of the cement board of the present application is reduced by 30% under static load. Compared with the method of...

Embodiment 2

[0069] refer to Figure 6 As shown, the difference between the prefabricated cement board of this embodiment and Embodiment 1 is that the launching sleeve 5 and the targeting sleeve 10 are located on the same side wall of the prefabricated cement concrete board 1 and are arranged in a staggered manner, and the targeting sleeve 10 and the The guide hole 4 communicates, and the launching sleeve 5 corresponds to and is collinear with the targeting sleeve 10 in the adjacent prefabricated cement concrete slab 1 .

[0070] The prefabricated cement board of this embodiment can realize the mutual assembly of the four sides of a prefabricated cement board, which is more convenient in the process of laying the road surface.

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Abstract

The invention relates to the technical field of assembly type pavements and particularly relates to an assembly type cement board force transmission component, a cement board and a preparation and using method of the cement board. The force transmission component comprises a guide plate and a plurality of launching sleeves perpendicularly and fixedly connected with the guide plate, wherein the guide plate is provided with a plurality of guide holes, the launching sleeves communicate with the guide holes, elastic force transmission rod assemblies are arranged in the launching sleeves, and blocking parts for blocking the elastic force transmission rod assemblies are arranged on the side, away from the launching sleeves, of the guide plate; a targeting sleeve is arranged on the side, away from the launching sleeve, of the blocking part, located on the side, in the moving direction of the elastic dowel bar assembly, and collinear with the launching sleeve. The force transmission component is advantaged in that the elastic dowel bar assembly can be quickly installed on the premise that an upper surface of a prefabricated slab joint is not damaged basically, and overall flatness and attractiveness of a pavement are guaranteed.

Description

technical field [0001] The invention relates to the technical field of assembled pavements, in particular to an assembled cement board force transmission member, a cement board and a method for preparing and using the same. Background technique [0002] Cement concrete pavement plays a dominant role in airport road paving, and its construction is divided into cast-in-place method and prefabricated assembly method. The traditional cast-in-place method has the problems of extensive production, low efficiency, and difficult control of construction quality caused by pouring and paving on the construction site, while the prefabrication assembly method has the advantages of centralized prefabrication quality controllable, transparent batch transportation management, and fast and environmentally friendly on-site assembly . Based on the above advantages, precast concrete pavements are widely used in various places, but the joints of rigid pavements need to ensure good load transfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C5/00E01C5/06B28B23/00
CPCE01C5/005E01C5/003E01C5/06B28B23/00Y02A30/60
Inventor 田波李思李袁帅帅谢晋德权磊李立辉张盼盼何哲
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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