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A platform for research: civil engineering, architecture and urbanism
Construction method of highway bridge reconstruction and extension hollow slab jacking reverse slope adjustment splicing structure
The invention relates to a construction method of a highway bridge reconstruction and extension hollow slab jacking reverse gradient adjusting splicing structure. The construction method comprises the following steps that hollow slabs are sequentially arranged and then integrally pulled and connected through an external prestress pull rod integral reinforcing structure; reinforcing the temporary splicing frame by using opposite-pulling profile steel to fix the splicing part of the hollow slabs; jacking the integrally pulled and connected hollow slabs by adopting an integral profile steel frame or a synchronous jacking steel pipe bracket for preventing the jack from shifting; and carrying out reverse slope adjustment on the hollow slab, widening the hollow slab and supporting the hollow slab by using an adjusting jack. The construction method has the beneficial effects that the adjacent hollow slabs are oppositely pulled and fixed through the oppositely-pulled profile steel reinforcing temporary splicing frames, temporary reinforcing of the hollow slabs can be achieved, and construction safety of the hollow slabs in the jacking process is guaranteed; the wet joint of the hollow slab support is subjected to pouring construction through the wet joint easy-to-disassemble hanging die, the bottom die and the top die are fixed and tied in a suspension and pulling combination mode, and the construction efficiency is improved while the construction quality of the wet joint is guaranteed.
本发明涉及一种公路桥梁改扩建空心板顶升反向调坡拼接结构的施工方法，包括以下步骤：将空心板依次排列后通过体外预应力拉杆整体加固结构整体拉接；用对拉型钢加固临时拼接架将空心板拼接处固定；采用防止千斤顶移位整体式型钢架或同步顶升钢管支架，顶升整体拉接后的空心板；对空心板进行反向调坡，拓宽空心板并用调整千斤顶支撑。本发明的有益效果是：通过对拉型钢加固临时拼接架对相邻空心板的对拉固定，可实现对空心板的临时加固，保证了顶升过程中空心板的施工安全；通过湿接缝易拆吊模对空心板支架的湿接缝进行浇筑施工，采用底模和顶模采用悬拉组合的方式固定拉结，在保证湿接缝的施工质量同时，提高了施工效率。
Construction method of highway bridge reconstruction and extension hollow slab jacking reverse slope adjustment splicing structure
The invention relates to a construction method of a highway bridge reconstruction and extension hollow slab jacking reverse gradient adjusting splicing structure. The construction method comprises the following steps that hollow slabs are sequentially arranged and then integrally pulled and connected through an external prestress pull rod integral reinforcing structure; reinforcing the temporary splicing frame by using opposite-pulling profile steel to fix the splicing part of the hollow slabs; jacking the integrally pulled and connected hollow slabs by adopting an integral profile steel frame or a synchronous jacking steel pipe bracket for preventing the jack from shifting; and carrying out reverse slope adjustment on the hollow slab, widening the hollow slab and supporting the hollow slab by using an adjusting jack. The construction method has the beneficial effects that the adjacent hollow slabs are oppositely pulled and fixed through the oppositely-pulled profile steel reinforcing temporary splicing frames, temporary reinforcing of the hollow slabs can be achieved, and construction safety of the hollow slabs in the jacking process is guaranteed; the wet joint of the hollow slab support is subjected to pouring construction through the wet joint easy-to-disassemble hanging die, the bottom die and the top die are fixed and tied in a suspension and pulling combination mode, and the construction efficiency is improved while the construction quality of the wet joint is guaranteed.
本发明涉及一种公路桥梁改扩建空心板顶升反向调坡拼接结构的施工方法，包括以下步骤：将空心板依次排列后通过体外预应力拉杆整体加固结构整体拉接；用对拉型钢加固临时拼接架将空心板拼接处固定；采用防止千斤顶移位整体式型钢架或同步顶升钢管支架，顶升整体拉接后的空心板；对空心板进行反向调坡，拓宽空心板并用调整千斤顶支撑。本发明的有益效果是：通过对拉型钢加固临时拼接架对相邻空心板的对拉固定，可实现对空心板的临时加固，保证了顶升过程中空心板的施工安全；通过湿接缝易拆吊模对空心板支架的湿接缝进行浇筑施工，采用底模和顶模采用悬拉组合的方式固定拉结，在保证湿接缝的施工质量同时，提高了施工效率。
Construction method of highway bridge reconstruction and extension hollow slab jacking reverse slope adjustment splicing structure
公路桥梁改扩建空心板顶升反向调坡拼接结构的施工方法
YANG WEN (author) / DONG SHIBING (author) / HU XIAN (author) / JIANG YUNTAO (author) / LI TAO (author) / YUE BINBIN (author) / YAN LINGHAN (author)
2024-07-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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