Comprehensive treatment structure of arch springing crack of concrete filled steel tube tied arch
A concrete-filled steel tube and comprehensive treatment technology, which is applied to arch bridges, erecting/assembling bridges, and bridge materials, etc., can solve the problems of reducing the service life of bridges, affecting the durability of bridges, etc., and achieve the effect of controlling the cracking of arch feet
Pending Publication Date: 2018-10-19
无锡市航道工程有限公司
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Problems solved by technology
The cracks in the arch foot will seep water, which will seriously affect the durability of the bridge and reduce the service life of the bridge
Method used
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] A steel pipe concrete tie-rod arch foot crack comprehensive treatment structure, by setting a main reinforcement structure and an auxiliary reinforcement structure inside the arch rib steel pipe 21, the cracking of the arch foot 1 can be controlled.
[0031] 1. The internal main reinforcement structure of arch rib steel pipe 21 includes three parts: annular steel plate 41, cylindrical structure 42 and cross bracing 43 (see Figure 2a , Figure 2b , Figure 2c ).
[0032] 1. The first part is a cylindrical structure 42 fixed on the inner wall of the ribbed steel pipe 21 . The cylindrical structure 42 is 30-40cm long, and its steel plate thickness is the same as that of the arch-rib steel pipe 21.
[0033] 2. The second part is the annular steel plate 41, the outer diameter of the annular steel plate 41 is slightly smaller than the cylindrical struct...
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Abstract
The invention relates to the technical field of bridge construction, in particular to a comprehensive treatment structure of an arch springing crack of a concrete filled steel tube tied arch. The comprehensive treatment structure comprises a main reinforcement structure and an auxiliary reinforcement structure. The main reinforcement structure is arranged in an arch rib steel pipe and located at the contact position of the arch rib steel pipe and an arch springing. The main reinforcement structure includes an annular steel plate, a cylindrical structure and a cross bracing, the outer edge of the annular steel plate is fixed to the inner wall of the cylindrical structure, the cylindrical structure is fixed to the inner wall of the arch rib steel pipe, the cross bracing is fixed to the annular steel plate, and the two ends of the cross bracing are fixed to the inner wall of the cylindrical structure. The main reinforcement structure and the auxiliary reinforcement structure are arrangedinside a steel tube arch rib to enable arch rib concrete and the arch rib to become a whole to effectively restrain the expansion of the arch rib caused by the squeeze of the arch rib concrete on thearch steel pipe, so as to control the cracking of the arch springing and achieve good results in the relying project.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a structure for comprehensively treating cracks in the arch foot of a steel pipe concrete tie rod arch. Background technique [0002] In inland waterway improvement projects, due to the clearance requirements of the navigation channel, the main bridge generally adopts structures such as long-span concrete-filled steel tube tie-bar arches, continuous box girders, and cable-stayed bridges. The concrete-filled steel tube tied arch bridge not only has the advantages of strong spanning capacity and simple construction, but also can reduce the height of the bridge building and shorten the length of the approach bridge, thereby significantly reducing the cost of the bridge, so it has been widely used in the regulation of inland waterways. [0003] The concrete-filled steel tube tie-rod arch arch foot is connected as a whole by steel pipe arch ribs, tie rods, etc. through con...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E01D22/00E01D4/00
CPCE01D22/00E01D4/00E01D2101/268
Inventor 杨本仇定良倪茂爱
Owner 无锡市航道工程有限公司