Assembling process of light segment prefabricated assembling bent cap
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A prefabricated assembly and segment technology, applied in the erection/assembly of bridges, bridges, bridge construction, etc., can solve the problems of high requirements, numerous construction procedures, and high hoisting costs, reduce the dependence of heavy machinery, and simplify the assembly operation. , Improve the effect of connection stability
Active Publication Date: 2021-09-21
JSTI GRP CO LTD +1
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Problems solved by technology
At present, the cover beam generally adopts the overall prefabrication or two-segment prefabrication process. This process is mainly due to the large prefabricated segments and heavy weight, which leads to relatively high road transportation and hoisting costs. The long construction period and the extensive use of formwork, support frames, and various large-scale machinery have hindered its rapid development
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Embodiment 1
[0129] The single pier column 1 light section prefabricated assembled cover beam is assembled on site, and the specific operation process is as follows:
[0130] In the first step, the pier top section 3 is hoisted above the support 2 according to the construction requirements, and the sealant 19 is applied to the side ends of the concrete top plate and the concrete bottom plate of the pier top section 3;
[0131] At the same time, insert the finish-rolled threaded steel bar into the anchor hole 10 of the pier top section 3 connected with the anchor groove 11 of the pier top section 3 .
[0132] In the second step, the standard segments 4 are assembled symmetrically at both ends.
[0133] The specific steps are:
[0134] Use a small crane to lift the standard section 4 and move to the pier top section 3 from the left and right directions. Alignment of fine-rolled threaded steel rods;
[0135] When the standard section 4 is close to the pier top section 3, use anchor bolts t...
Embodiment 2
[0149] Based on the on-site assembly of light-duty segmental prefabricated assembled cap beams with multi-column piers, the specific operation process is as follows:
[0150] In the first step, refer to the on-site assembly steps of the top section 3 and the standard section 4 of the single-column pier light section cover beam pier in Example 1, until the symmetrical cantilever is assembled to the closing section 5.
[0151] In the second step, the finish-rolled threaded steel rods are placed symmetrically in the anchor holes 10 connected to the anchor grooves 11 on the standard segment 4 to be closed and the closed segment 5 respectively.
[0152] The third step is to use a small crane to vertically hoist the closing section 5 to the section to be closed, and use a steel sleeve 9 to connect the standard section 4 to be closed with the fine-rolled threaded steel rod in the gap groove 30 on the closing section 5 , use anchor bolts to fix the finish-rolled threaded steel rod in ...
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Abstract
The invention discloses an assembling process of a light segment prefabricated assembly bent cap, which belongs to the technical field of bent cap construction, and comprises the following steps of: mounting a prefabricated pier top segment on a pier column on a construction site by using a hoisting machine, respectively smearing sealant on the connecting end surfaces of a prefabricated standard segment, an end segment and the pier top segment, and sealing the prefabricated standard segment, the end segment and the pier top segment; in the transverse extending direction of the bent cap, at least one standard section is sequentially spliced and connected to the side end face of the pier top section in a cantilever mode through a hoisting machine, and the transverse channel communicates with a hollow cavity channel of the standard section; splicing and connecting an end section on a standard section which is connected with the side end of the pier top section along a transverse cantilever of the bent cap by utilizing a hoisting mechanical cantilever; and after the bent cap is assembled into a whole, arranging a plurality of prestressed tendons in the bent cap in a penetrating mode in the transverse stretching direction for fastening and tensioning. According to the assembling process, the light prefabricated sections are adopted, a large number of supporting frames and formworks do not need to be adopted, and the weight of each section and dependence on heavy machinery are reduced.
Description
technical field [0001] The invention belongs to the technical field of cover beam construction, and in particular relates to an assembly process of a light-duty segmental prefabricated assembled cover beam. Background technique [0002] Prefabricated assembly technology can speed up on-site construction, greatly reduce the impact on the bridge environment and traffic interference, it is easy to ensure the quality of the project, and can reduce the life cycle cost of the bridge. Its technical and economic advantages are increasingly recognized by the bridge industry in various countries. [0003] With the improvement of my country's industrialization level and the rise of labor costs, prefabrication and assembly technology is an inevitable trend in the future development of the construction industry. The prefabrication and assembly technology of concrete bridges is being popularized and applied in a large area in my country because of its advantages such as easy quality assur...
Claims
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Application Information
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