Fabricated steel-concrete composite structure for reinforcing large-span box-ribbed arch bridge
A combined structure and prefabricated technology, used in arch bridges, bridge reinforcement, bridge forms, etc., can solve the problems of difficult bending and forming of steel plates, construction and cost constraints, and easy corrosion of steel, and achieve low overall project cost and construction period. short, low-impact effects
Active Publication Date: 2020-05-08
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology
For example: in the common pasting method, the steel is easy to corrode in the pasting steel plate technology, the bending of the steel plate is difficult, and the integrity after pasting is poor; while the method of enlarging the section of the arch ring needs to set up a bracket, in some specific areas and environments There are certain restrictions on construction and cost
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[0026] The assembled steel-concrete composite structure for strengthening long-span box arch bridges of the present invention includes reinforcement members arranged on both sides of the main arch and transverse connecting members 4 that connect the reinforcement members laterally through the soffit and the arch back respectively. The reinforcing member and the transverse connecting member 4 form a hoop structure for transversely and longitudinally reinforcing the main arch; The reinforcement members on both sides of the main arch are connected to reinforce the longitudinal direction of the main arch, and the horizontal connection members 4 form a structure of upper and lower reinforcements. The hoop structure formed strengthens the horizontal connection and integrity of the old and new structures, so that the old and new structures are jointly stressed.
[0027] In this embodiment, the reinforcing member is a reinforced concrete structure that is fixedly connected to the main ...
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The invention discloses a fabricated steel-concrete composite structure for reinforcing the large-span box-ribbed arch bridge, which comprises reinforcing components arranged on the two sides of a main arch and transverse connecting components transversely connected with the reinforcing components through arch webs and arch backs, wherein the reinforcing components and the transverse connecting components form a hoop structure for transversely and longitudinally reinforcing the main arch. The large-span box-ribbed arch bridge is reinforced and transformed through the steel-concrete composite structure, the transverse connection and integrity of new and old structures are enhanced, the new and old structures are stressed together, supports and formworks do not need to be erected, only simple hanging basket construction is needed, the reinforcing and transforming period is short, the construction efficiency is high, and the overall construction cost is low.
Description
technical field [0001] The invention relates to the field of bridge reinforcement and transformation, in particular to an assembled steel-concrete composite structure for strengthening a long-span box-arch bridge. Background technique [0002] Arch bridges play a pivotal role in my country's transportation. However, due to various reasons, various bridge diseases have appeared, and some commonly used methods of strengthening and widening arch bridges have some shortcomings in certain specific environments and requirements. For example: in the common pasting method, the steel is easy to corrode in the pasting steel plate technology, the bending of the steel plate is difficult, and the integrity after pasting is poor; while the method of enlarging the section of the arch ring needs to set up a bracket, in some specific areas and environments There are certain restrictions on construction and cost. Contents of the invention [0003] In view of this, the purpose of the presen...
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IPC IPC(8): E01D4/00E01D19/00E01D22/00
CPCE01D4/00E01D19/00E01D22/00
Inventor 高燕梅
Owner CHONGQING JIAOTONG UNIVERSITY