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A platform for research: civil engineering, architecture and urbanism
Construction method for cantilever casting beam in alpine region
The invention relates to the technical field of building structure engineering, in particular to a construction method for a suspended pouring beam in an alpine region, which comprises the following steps of: arranging a template structure with an external thermal insulation body on the periphery of the suspended pouring beam to be poured, completely coating the suspended pouring beam to be poured by using the template structure to form a suspended pouring beam pouring space, and preheating the external thermal insulation body to form a suspended pouring beam pouring space; the method comprises the following steps: pouring a cantilever beam into a cantilever beam pouring space to enable the temperature in the cantilever beam pouring space to reach a target temperature, performing cantilever beam construction at the target temperature to obtain a to-be-maintained cantilever beam structure, and then performing heat preservation maintenance on the to-be-maintained cantilever beam structure to enable the to-be-maintained cantilever beam structure to reach target strength. And then formwork removal, tensioning and grouting construction are carried out on the suspended pouring beam reaching the strength, finally, the prestress of the suspended pouring beam reaches a design value, and the problem that water contained in concrete of the cast-in-place suspended pouring beam is prone to freezing, so that when the suspended pouring beam is subjected to the tensioning and grouting process, the prestress of the suspended pouring beam is affected is solved. The cantilever beam is easy to break or the tension stress of the cantilever beam cannot reach a design value.
本发明涉及建筑结构工程技术领域，特别涉及一种高寒地区悬浇梁施工方法，在待浇筑悬浇梁的外周设置带有外保温体的模板结构，利用模板结构将待浇筑悬浇梁完全包覆形成悬浇梁浇筑空间，然后通过对外保温体进行预加热，以使得悬浇梁浇筑空间内的温度达到目标温度，在此目标温度下进行悬浇梁施工并得到待养护悬浇梁结构，然后对待养护悬浇梁结构进行保温养护，使得待养护悬浇梁结构达到目标强度，接下来在对达到强度的悬浇梁进行拆模、张拉以及压浆施工，最终使得悬浇梁的预应力达到设计值，解决了现浇悬浇梁的混凝土中含有的水分易结冰，导致悬浇梁在进行张拉及压浆工艺时，悬浇梁易断裂或者悬浇梁的张拉应力无法达到设计值的技术缺陷。
Construction method for cantilever casting beam in alpine region
The invention relates to the technical field of building structure engineering, in particular to a construction method for a suspended pouring beam in an alpine region, which comprises the following steps of: arranging a template structure with an external thermal insulation body on the periphery of the suspended pouring beam to be poured, completely coating the suspended pouring beam to be poured by using the template structure to form a suspended pouring beam pouring space, and preheating the external thermal insulation body to form a suspended pouring beam pouring space; the method comprises the following steps: pouring a cantilever beam into a cantilever beam pouring space to enable the temperature in the cantilever beam pouring space to reach a target temperature, performing cantilever beam construction at the target temperature to obtain a to-be-maintained cantilever beam structure, and then performing heat preservation maintenance on the to-be-maintained cantilever beam structure to enable the to-be-maintained cantilever beam structure to reach target strength. And then formwork removal, tensioning and grouting construction are carried out on the suspended pouring beam reaching the strength, finally, the prestress of the suspended pouring beam reaches a design value, and the problem that water contained in concrete of the cast-in-place suspended pouring beam is prone to freezing, so that when the suspended pouring beam is subjected to the tensioning and grouting process, the prestress of the suspended pouring beam is affected is solved. The cantilever beam is easy to break or the tension stress of the cantilever beam cannot reach a design value.
本发明涉及建筑结构工程技术领域，特别涉及一种高寒地区悬浇梁施工方法，在待浇筑悬浇梁的外周设置带有外保温体的模板结构，利用模板结构将待浇筑悬浇梁完全包覆形成悬浇梁浇筑空间，然后通过对外保温体进行预加热，以使得悬浇梁浇筑空间内的温度达到目标温度，在此目标温度下进行悬浇梁施工并得到待养护悬浇梁结构，然后对待养护悬浇梁结构进行保温养护，使得待养护悬浇梁结构达到目标强度，接下来在对达到强度的悬浇梁进行拆模、张拉以及压浆施工，最终使得悬浇梁的预应力达到设计值，解决了现浇悬浇梁的混凝土中含有的水分易结冰，导致悬浇梁在进行张拉及压浆工艺时，悬浇梁易断裂或者悬浇梁的张拉应力无法达到设计值的技术缺陷。
Construction method for cantilever casting beam in alpine region
高寒地区悬浇梁施工方法
DUAN FENG (author) / ZHU JIANFENG (author) / WU XULIANG (author) / LI XIANGRUI (author) / WANG ZHANGLIN (author) / HOU HONGJIANG (author)
2022-06-24
Patent
Electronic Resource
Chinese
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