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Double-deck steel truss PC composite structure bridge and construction method thereof

A combined structure and bridge deck technology, applied in bridge construction, bridges, bridge parts, etc., can solve problems such as excessive resource use, complex structure, and inapplicability to urban roads

Inactive Publication Date: 2021-02-02
SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double-deck steel truss PC composite structure bridge, aiming to solve the problem that the existing double-deck bridges are mostly road-rail bridges with complex structures, many resources used, and high cost, which are not suitable for urban roads. technical issues

Method used

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  • Double-deck steel truss PC composite structure bridge and construction method thereof
  • Double-deck steel truss PC composite structure bridge and construction method thereof
  • Double-deck steel truss PC composite structure bridge and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] figure 1 Shown is the three-dimensional structure schematic diagram of the double deck steel truss PC composite structure bridge of the present invention, as figure 2 Shown is a cross-sectional view of a double-deck steel truss PC composite structure bridge at the nodes. In order to clearly illustrate the main structure, figure 1 and figure 2 Only the important components are shown, the bridge includes the upper deck deck 1 of concrete structure, the lower deck deck 2 of reinforced concrete PC composite structure, web members 3 of steel pipe structure, upper nodes 4 and lower nodes 5, web members The top of truss 3 is consolidated with upper deck 1 via upper node 4, and the bottom end of truss web 3 is consolidated with lower deck 2 via lower node 5 to form a double deck;

[0048] The longitudinal two sides of the upper bridge deck 1 are provided with through supporting holes 11, and longitudinal steel bars 13 are reserved at the supporting holes 11;

[0049] Botto...

Embodiment 2

[0108] Figure 9 Shown is the flow chart of the construction method of the double-deck steel truss PC composite structure bridge, and the method includes steps:

[0109] S101, the upper bridge deck of the precast concrete structure, the lower deck of the reinforced concrete PC composite structure, the truss web of the steel pipe structure, the upper node and the lower node, wherein the longitudinal two sides of the upper deck are provided with through support holes, and the support holes are Lap-joint steel bars are reserved; bottomed support grooves are opened on the top of the longitudinal two sides of the lower bridge deck, and lap-joint steel bars are reserved at the support grooves; The stiffeners of the knot, the stiffeners are penetrated with steel holes; the lower nodes include the steel bottom plate consolidated with the bottom end of the truss web and the stiffeners perpendicular to the steel bottom plate and consolidated, the stiffeners are penetrated with steel hol...

Embodiment 3

[0120] Figure 10 Shown is the flow chart of the second design and construction method of the present invention, and the construction method includes steps:

[0121] S201, the upper bridge deck of the precast concrete structure, the lower deck of the reinforced concrete PC composite structure, the truss web of the steel pipe structure, the upper node and the lower node, wherein the longitudinal two sides of the upper deck are provided with through supporting holes, and the surrounding of the supporting holes The first groove and lap steel bars that match the steel roof of the upper node are reserved; the top of the lower bridge deck is provided with support grooves on both longitudinal sides, and the second groove and lap steel bars that are consistent with the steel bottom plate of the lower node are reserved around the support groove. connected with steel bars; the upper node includes a steel roof consolidated with the top of the truss web and a stiffener perpendicular to an...

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Abstract

The invention discloses a double-deck steel truss PC composite structure bridge and a construction method thereof.The bridge comprises an upper deck slab, a lower deck slab, truss web members, an upper joint and a lower joint, the top ends of the truss web members are fixedly connected with the upper deck slab through the upper joint, and the bottom ends of the truss web members are fixedly connected with the lower deck slab through the lower joint to form a double-deck; wherein through supporting holes are formed in the two longitudinal edges of the upper-layer bridge deck slab, lap joint reinforcing steel bars are reserved at the supporting holes, supporting grooves are formed in the tops of the two longitudinal edges of the lower-layer bridge deck slab, lap joint reinforcing steel barsare reserved at the supporting grooves, reinforcing ribs of the upper joint and the lower joint are provided with reinforcing steel bar holes in a penetrating mode, and the lap joint reinforcing steelbars are in lap joint through the reinforcing steel bar holes. Concrete is cast in place in the supporting holes and the supporting grooves, so that the upper joint and the lower joint are solidified, the double-layer bridge deck with high wind resistance, low dead weight and low manufacturing cost is achieved, the space and resource utilization rate of the bridge is increased, and the bridge issimple in structure, low in manufacturing cost, stable in performance, high in safety, energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of bridges and building structures, in particular to a double deck steel truss PC composite structure bridge and a construction method thereof. Background technique [0002] With the rapid development of the transportation industry, bridge engineering has also undergone many changes. Due to the preciousness and scarcity of land, mountains, rivers, and ocean resources on the earth, during civil engineering construction, in order to save channel resources, share bridge positions, improve resource utilization, and respond to environmental protection, energy-saving and sustainable development policies, double-deck bridges More and more, not only can make full and reasonable use of natural space, but also can greatly save infrastructure materials and construction costs, and has good environmental protection, economy, and sustainable development. However, at present, most double-layer bridges are The road-rail dual-purpose...

Claims

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Application Information

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IPC IPC(8): E01D1/00E01D19/12E01D19/00
CPCE01D1/00E01D19/125E01D19/00
Inventor 李勇黄瑞婵刘念琴李敏马立平文剑波
Owner SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD
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