Assembly type hollow slab bridge and construction method thereof

A technology of hollow slab bridges and hollow slabs, which is applied in the direction of erecting/assembling bridges, bridge construction, bridges, etc., which can solve the problems of low strength of grooved concrete, poor bridge integrity, and difficult quality assurance, etc., and achieve steel plate force transmission Clarify and simplify the support process, and the effect of mature design calculation

Inactive Publication Date: 2014-10-01
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This kind of prefabricated hollow slab bridge with grooved joints is only connected and transmitted by steel bars and concrete with grooved joints and bridge deck pavement between adjacent hollow slabs, so the connection capacity between hollow slabs is insufficient, and the integrity of the bridge is poor
Moreover, the size of the grooved joint is generally relatively small, the construction is difficult, and the quality is not easy to be guaranteed, resulting in low concrete strength and easy damage of the grooved joint, resulting in shear failure of the grooved joint. Cracking, forming single-board stress, increasing the deflection of the hollow slab, causing cracks to appear on the bridge deck along the longitudinal direction of the bridge at the position of the tongue and groove, destroying the pavement layer of the bridge deck, causing bumpy driving, thus affecting the normal use and durability of the bridge Sexuality, laying hidden dangers to bridge traffic safety

Method used

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  • Assembly type hollow slab bridge and construction method thereof
  • Assembly type hollow slab bridge and construction method thereof
  • Assembly type hollow slab bridge and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Depend on Figure 1-Figure 3 The assembled hollow slab bridge shown includes hollow slabs 1 arranged continuously from left to right in the transverse direction. The hollow slabs 1 extend longitudinally from front to back and are pre-tensioned. The body of the hollow plate 1 is provided with an inner hole 2 extending longitudinally. The longitudinal sides of the hollow plate 1 are straight sides, and all the sides of the hollow plate 1 are straight sides. The longitudinal extension of the hollow plate 1 The sides of the hollow plate 1 are straight, that is, the longitudinally extending sides of the hollow plate 1 are perpendicular to the upper and lower surfaces of the hollow plate 1 . The longitudinal direction is the length direction of the hollow plate 1 , and the transverse direction is the width direction of the hollow plate 1 . Certainly, the application of the present invention is not limited to the above-mentioned form, and two inner holes of each hollow pla...

Embodiment 2

[0023] The construction method of the prefabricated hollow slab bridge is aimed at the construction method of the prefabricated hollow slab bridge adopting steel plate plug-in connection described in embodiment 1, and it comprises the following steps:

[0024] (1) Prepare the hollow plate 1 and the I-beam 4 described in Example 1: process the prefabricated I-beam 4 according to the predetermined size, the height of the web 3 of the I-beam 4 corresponds to the thickness of the hollow plate 1; the hollow plate 1 During fabrication, the structural analysis of the hollow slab bridge is first carried out according to the design parameters such as bridge grade, span, and bridge deck width, and the cross-sectional size, ordinary steel bars and longitudinal prestressed tendons of the hollow slab 1 are calculated and determined, and the shear resistance between adjacent girders and slabs is determined. The design requires calculation and determination of the structural size, steel plate...

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Abstract

The invention discloses an assembly type hollow slab bridge and a construction method thereof. The assembly type hollow slab bridge comprises hollow slabs which are transversely and continuously arranged in sequence; two adjacent hollow slabs are connected together through joist steel; two opposite longitudinal side edges of two adjacent hollow slabs are clamped into notches in both sides of the joist steel respectively; the longitudinal side edges of the hollow slabs are straight edges; the longitudinal-extending side faces of the hollow slabs are straight faces. The construction method of the assembly type hollow slab bridge is a construction method for realizing the hollow slab bridge. By adopting the assembly type hollow slab bridge and the construction method thereof, the transverse integrity of the hollow slab bridge can be enhanced, and the shear transfer capacity among the hollow slabs is increased.

Description

technical field [0001] The invention relates to an assembled hollow slab bridge and a construction method thereof. Background technique [0002] Prefabricated hollow slab bridges have been widely used in highway construction, especially in small and medium highway bridges with a span of 20m or less. This type of bridge has the characteristics of reliable quality, convenient and fast construction. The construction method is to hoist the prefabricated hollow slabs in place, then pour concrete at the position of the grooved joints between adjacent hollow slabs, pave the bridge deck, and connect each block through the grooved joint steel bars and concrete and bridge deck pavement. The hollow slabs are connected transversely along the bridge to form a whole. The hollow slabs of this type of bridge are constructed in prefabrication plants. The cross-section is usually in the form of single or double holes. The pretensioning method is used for construction. Prestressed tendons are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/00E01D21/00
Inventor 葛素娟陈淮李静斌李杰王艳陈代海李整
Owner ZHENGZHOU UNIV
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