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Self-anchored cable-stayed tied arch bridge

A tie-bar arch bridge, self-anchored technology, applied to bridges, bridge parts, bridge construction, etc., can solve problems such as structural collapse

Pending Publication Date: 2020-06-26
淮安市公路事业发展中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0048] The object of the present invention is to design a self-anchored cable-stayed tie-bar bridge in combination with the common stress characteristics of the tie-bar arch bridge and the cable-stayed bridge. The structural collapse of the bar arch bridge itself due to the failure of the suspenders and the defects of the arch ribs has brought new vitality to the tied arch bridge and further improved the spanning capacity of the new composite system bridge

Method used

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  • Self-anchored cable-stayed tied arch bridge
  • Self-anchored cable-stayed tied arch bridge
  • Self-anchored cable-stayed tied arch bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Embodiment 1: as Figure 11 As shown, it is a self-anchored cable-stayed arch bridge with variable cross-section continuous beams, according to Figure 13 The steps of construction are as follows:

[0116] The first step is to complete pier 8, pier 9, pier 8' and pier 9' according to conventional construction methods;

[0117] The second step is to install support 7 on the pier caps of pier 8, pier 8', pier 9, and pier 9' respectively, and formwork-in-place to complete the beam body block of block 0 and block 0' of the main span tie bar ;

[0118] The third step is to use the hanging basket cantilever cast-in-place method or the hanging basket cantilever assembly method to carry out the No. 1 block and No. 1' block, No. 2 block and No. 2' block of the main span tie bar 1 and side span continuous beam 2 in sequence. block ... and other beam body blocks, until the closing sections 11, 11' of the side-span continuous beam 2 and the closing section 10 of the main span ti...

Embodiment 2

[0124] Embodiment 2: as Figure 12 As shown, it is a self-anchored cable-stayed arch bridge with constant cross-section continuous beams, according to Figure 14 The steps of construction are as follows:

[0125] The first step is to complete pier 8, pier 9, pier 8' and pier 9' according to conventional construction methods;

[0126] In the second step, the construction method of the full hall support is used to complete the temporary project of the construction support of the cast-in-place beam body of the main span tie rod 1 and the side span continuous beam 2 ( Figure 14 not marked in);

[0127] The third step is to cast in-situ the main span tie bar 1 and the side span main beam 2 section by section on the full hall support until the side span closure and middle span closure of the entire continuous beam are completed successively;

[0128] The fourth step is to cantilever or cantilever arch rib segments on the main beams of the main span and side spans; some temporary...

Embodiment 3

[0133] Embodiment 3: as Figure 12 As shown, it is a self-anchored cable-stayed arch bridge with constant cross-section continuous beams, according to Figure 15 The steps of construction are as follows:

[0134] The first step is to complete pier 8, pier 9, pier 8' and pier 9' according to conventional construction methods;

[0135] In the second step, the beam blocks 0 and 0' at the top of the main pier, the beam blocks 1 and 1' of the main span and the main beam of side span 2 are completed by using the full hall support method;

[0136] The third step is to complete the cantilevered or cantilevered construction of all the beams of the main span except the closing section, and simultaneously carry out the cantilevered or cantilevered construction of the arch rib 3; some temporary auxiliary cables can also be added according to the construction needs;

[0137] The fourth step is to complete the construction of the closing section of the main girder 1 of the main span tie b...

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Abstract

The invention discloses a self-anchored cable-stayed tied-arch bridge. The bridge is a beam, arch and cable novel combined system bridge with a main span adopting through rigid arch rib rigid tie barsand a Nielson system flexible inhaul cable, the main span and a side span are three continuous spans, and cable-stayed self-anchored single-rib arches, double-rib arches or multi-rib arches and stiffening beams are arranged between side span continuous beams and arch ribs. And the double-rib arches and the multi-rib arches are transversely and rigidly connected through the cross beams and the wind braces to form a single-width, double-width or multi-width bridge. The bridge adopts a novel construction method of synchronous section-by-section suspension pouring or suspension splicing of beamsand arches. The novel bridge is large in spanning capacity, large in bearing capacity, novel in construction method, low in construction cost, self-balanced in beam arch, safe, free of risks, attractive in appearance, high in applicability and wide in application range. The tied-arch bridge can regain new vitality, the spanning capacity of the combined system bridge is further improved, and the combined system bridge is worthy of application and popularization in bridge engineering of expressways, railways, cities, countries and the like in China.

Description

technical field [0001] The invention belongs to the technical field of traffic infrastructure construction engineering, and in particular relates to a new type combined bridge of a tied arch bridge and a cable-stayed bridge and a construction method thereof, that is, a self-anchored cable-stayed tie-bar arch bridge and a construction method thereof. Background technique [0002] The arch composite system bridge is: the two basic structures of the beam and the arch are combined to bear the load together, and the structural characteristics of the beam under bending and the arch under compression and their combined effects are fully utilized to achieve the purpose of saving materials. Arch composite system bridges generally consist of arch ribs and tie rods (when the tie rods are stiffened beams with larger cross-sections, such as box girders with constant cross-sections or box girders with variable cross-sections, they are also called tie beams in domestic data. They are colle...

Claims

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Application Information

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IPC IPC(8): E01D12/00E01D19/00E01D19/16E01D19/14E01D21/10E01D21/00
CPCE01D12/00E01D19/00E01D19/14E01D19/16E01D21/00E01D21/10E01D21/105
Inventor 张玉恒
Owner 淮安市公路事业发展中心
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