Structure method for expansion joint of cement concrete pavement

A technology of cement concrete and construction method, applied in the directions of roads, roads, pavement details, etc., can solve the problems that cannot be solved at the same time, destroy the integrity of the road surface, and are not given, so as to prevent warping damage, improve stiffness, and prevent mud Effect

Inactive Publication Date: 2012-07-18
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no method to avoid the setting of expansion joints, and it is impossible to solve the problem of destroying the integrity of the pavement and the stress concentration at the joints caused by setting the joints at the same time

Method used

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  • Structure method for expansion joint of cement concrete pavement
  • Structure method for expansion joint of cement concrete pavement
  • Structure method for expansion joint of cement concrete pavement

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Embodiment Construction

[0038] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0039] like figure 1 As shown, it is the application environment of the embodiment: a cement concrete road with a width of 10m crosses a highway at a plane, and it is proposed to adopt a sunken structure for the cement concrete road to cross the highway, and the road surface thickness is 22cm. The distance from the lowest point of the sunken road to the ground surface is 6m. In order to ensure the integrity of the road surface, expansion joints are not allowed on the road surface.

[0040] The specific implementation steps of this embodiment are as follows:

[0041] Step 1. The following parameter values ​​can be...

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Abstract

The invention provides a structure method for expansion joint of a cement concrete pavement, belonging to the technical field of building construction. The method comprises the following operation steps: firstly, conducting meteorological survey and geological investigation for a construction site, and determining temperature load size and roadbed geological conditions; then determining construction parameters of ground anchors, conducting construction of the ground anchors after finishing pavement bed course; determining horizontal anchor fixed length c of the end of a reinforced steel hanger and horizontal width b of the lower end of the steel hanger around the ground anchors in accordance with the design specification of a reinforced concrete structure, and arranging a reinforced steelhanger mesh at the position of row-like ground anchors and connecting the steel hanger mesh with distributed reinforcements in the cement concrete road surface in a welding mode; and finally installing anchor seats of the ground anchors again, connecting the anchor seats with the road surface reinforcing mesh in the welding mode, and pouring the road surface in a construction advance direction. The invention keeps integrity of the road surface, simultaneously, provides a certain vertical restrain for road slabs so as to avoid warpage of the road surface.

Description

technical field [0001] The invention relates to a method in the technical field of building construction, in particular to a method for constructing cement concrete pavement expansion joints. Background technique [0002] Under the effect of concrete shrinkage effect, temperature gradient day and night temperature difference and seasonal temperature difference, cement concrete pavement will produce warping and stretching deformation, which will affect the normal use and safety of the road. In order to avoid this situation, it is usually chosen to set various types of transverse joints along the direction of the road. According to different functions, it can generally be divided into contraction joints and expansion joints. Among them, expansion joints are real joints with larger width and larger spacing. Expansion joints are used to release the expansion deformation of concrete pavement due to temperature changes. However, in actual use, because it destroys the integrity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/06E01C11/14
Inventor 郑品罗春泳孙阳姜弘朱明
Owner SHANGHAI JIAOTONG UNIV
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