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Suspending and pulling combined erection construction method and device
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A construction method and suspension cable technology, which is applied in the erection/assembly of bridges, bridge construction, bridges, etc., can solve the problems of large safety risks, large deformation of the hoisting system, and large construction risks, so as to save project investment, reduce construction difficulty, and reduce costs. force clear effect
Active Publication Date: 2015-11-04
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology
The main disadvantages of this construction method are: (a) the amount of materials used to erect the support is large; (b) due to the large number of support components and connection points, there are many factors affecting the stability of the support, and the safety of the support is not easy to control. Span collapse accidents often occur; (c) when the bridge is high or the river bed flow is deep, the construction with supports is not suitable
The main disadvantages of this construction method are: (a) a large prefabricated site is required; (b) the deformation of the hoisting system is relatively large during the hoisting of the structure, and the construction risk is relatively large; (c) it takes a long time after the structure is in place. Temporary fixation with buckle cables, buckle towers and wind ropes has a great safety risk, especially when encountering bad weather; (d) There are certain restrictions on the span or hoisting weight of bridges suitable for construction without supports
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Embodiment 1
[0024] Such as figure 1 As shown, the suspension combined erection method of the present invention is used for the erection of the bridge structure 5, and mainly adopts a device composed of the following components: comprising a suspension cable 1, an upper cable 2, a lower cable 3, a supporting structure 4, and an anchorage 6. Cable clamp 7, upper connecting piece 8, lower connecting piece 9, upper adjusting device 10, lower adjusting device 11, anchoring device 12 and foundation or anchoring structure 13.
[0025] Such as figure 1 As shown, the suspension combined erection method of the present invention is implemented in the following manner:
[0026] step 1. First, according to the technical characteristics of the bridge to be erected, the design parameters of the bridge structure 5, and the topographic and geological conditions, the detailed calculation and design of each component of the erection system, including the suspension cable 1, the upper cable 2, the lower ca...
Embodiment 2
[0036] Embodiment 2: The present invention is used for the embodiment of arch bridge erection:
[0037] Such as figure 2 As shown, a top-supported reinforced concrete box arch bridge is located in the canyon section, and the bridge deck is 120m above the river surface. The width of the carriageway on the bridge deck is 9m, the width of sidewalks on both sides is 1.5m, and the overall width is 12m. The net span of the main arch ring is 195m, the ratio of rise to span is 1 / 5, the total width of the arch ring is 8.0m, the height is 3.2m, and the thickness of the top and bottom plates of the arch ring is 25cm. In order to reduce the construction load, the main arch ring is designed as a single-box five-chamber cross-section, and the upper and lower side boxes are constructed using the suspension-tensioning combined erection method. .
[0038] Such as figure 2 As shown, due to the limitation of terrain conditions, the anchor structure 13 of the pull cable 3 adopts the structu...
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Abstract
The invention discloses a suspending and pulling combined erection construction method and device. The suspending and pulling combined erection construction method comprises the following steps: a suspending cable (1) is erected and mounted at first, the upper ends of upper pulling cables (2) are connected with the suspending cable (1), a supporting structure (4) is connected to the lower ends of the upper pulling cables (2), and the upper ends of lower pulling cables (3) are connected with the supporting structure (4); then the lower pulling cables (3) are downwardly stretched to enable the suspending cable to be further stressed, so that the supporting structure (4) is preliminarily in place, and the upper pulling cables (2) and the lower pulling cables (3) are adjusted to enable the supporting structure (4) to be accurately in place; pouring or splicing of a bridge structure (5) is conducted on the supporting structure (4); when construction of the bridge structure (5) is completely finished, the lower pulling cables (3) and the upper pulling cables (2) are released step by step to complete unloading of the whole support; and finally, the lower pulling cables (3), the supporting structure (4), the upper pulling cables (2) and the suspending cable (1) are sequentially dismantled. According to the suspending and pulling combined erection construction method and device, the construction control difficulty can be reduced, the erection security is improved and the engineering investment is lowered.
Description
technical field [0001] The invention relates to an erection method of an engineering structure, in particular to a suspension combined erection method of a bridge structure and an adopted device, and belongs to the technical field of civil engineering structures. Background technique [0002] The construction methods of the bridge superstructure can generally be divided into two types: construction with support and construction without support. [0003] Construction with brackets generally refers to erecting brackets first, and then pouring concrete on the brackets, such as the full house scaffolding construction method. The main disadvantages of this construction method are: (a) the amount of materials used to erect the support is large; (b) due to the large number of support components and connection points, there are many factors affecting the stability of the support, and the safety of the support is not easy to control. Span collapse accidents often occur; (c) when the...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 谢春生
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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