A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Internal tensioning prestress large-span subway station wallboard structure and construction method thereof
The invention discloses an internal tensioning prestressed large-span subway station wallboard structure and a construction method thereof, the internal tensioning prestressed large-span subway station wallboard structure comprises a concrete wall, a prefabricated bottom plate, a post-cast laminated layer and internal tensioning prestressed tendons, a bracket is arranged on the inner side of the concrete wall, and a wallboard node area is arranged at the joint of the concrete wall, the prefabricated bottom plate and the post-cast laminated layer; the prefabricated bottom plate comprises in-plate first prestressed tendons, corrugated pipes, in-plate longitudinal tendons and in-plate truss tendons, the in-plate first prestressed tendons are located at the bottom of the prefabricated bottom plate and used for applying prestress to the prefabricated bottom plate, and the in-plate truss tendons extend out of the upper surface of the prefabricated bottom plate; bidirectionally distributed steel bars are bound at the upper part of the post-cast laminated layer; the in-board longitudinal bars and the two-way distributed steel bars penetrate into the wallboard node area; the internal tensioning prestressed tendons penetrate through the corrugated pipes, anchoring ends are formed at the two ends of the post-pouring laminated layer, and a tensioning end is formed at the midspan bottom of the prefabricated bottom plate. The prestressed tendons are tensioned in stages, so that the use of temporary supports can be avoided, the cost is reduced, the number of the prestressed tendons is reduced, and the inverted arch deformation and cracking damage of the prefabricated part are prevented.
本发明公开了一种内张预应力大跨地铁车站墙板结构及其施工方法，包括混凝土墙、预制底板、后浇叠合层和内张预应力筋，混凝土墙的内侧设置牛腿，混凝土墙与预制底板、后浇叠合层的连接处为墙板节点区；预制底板包括板内第一预应力筋、波纹管、板内纵筋和板内桁架筋，板内第一预应力筋位于预制底板底部，用于对预制底板施加预应力，板内桁架筋伸出预制底板的上表面；后浇叠合层上部绑扎双向分布钢筋；板内纵筋与双向分布钢筋穿入墙板节点区；内张预应力筋穿过波纹管并在后浇叠合层两端形成锚固端，在预制底板跨中底部形成张拉端。本发明分阶段张拉预应力筋，能免除临时支撑的使用，降低成本，减少预应力筋数量，防止预制构件反拱变形与开裂破坏。
Internal tensioning prestress large-span subway station wallboard structure and construction method thereof
The invention discloses an internal tensioning prestressed large-span subway station wallboard structure and a construction method thereof, the internal tensioning prestressed large-span subway station wallboard structure comprises a concrete wall, a prefabricated bottom plate, a post-cast laminated layer and internal tensioning prestressed tendons, a bracket is arranged on the inner side of the concrete wall, and a wallboard node area is arranged at the joint of the concrete wall, the prefabricated bottom plate and the post-cast laminated layer; the prefabricated bottom plate comprises in-plate first prestressed tendons, corrugated pipes, in-plate longitudinal tendons and in-plate truss tendons, the in-plate first prestressed tendons are located at the bottom of the prefabricated bottom plate and used for applying prestress to the prefabricated bottom plate, and the in-plate truss tendons extend out of the upper surface of the prefabricated bottom plate; bidirectionally distributed steel bars are bound at the upper part of the post-cast laminated layer; the in-board longitudinal bars and the two-way distributed steel bars penetrate into the wallboard node area; the internal tensioning prestressed tendons penetrate through the corrugated pipes, anchoring ends are formed at the two ends of the post-pouring laminated layer, and a tensioning end is formed at the midspan bottom of the prefabricated bottom plate. The prestressed tendons are tensioned in stages, so that the use of temporary supports can be avoided, the cost is reduced, the number of the prestressed tendons is reduced, and the inverted arch deformation and cracking damage of the prefabricated part are prevented.
本发明公开了一种内张预应力大跨地铁车站墙板结构及其施工方法，包括混凝土墙、预制底板、后浇叠合层和内张预应力筋，混凝土墙的内侧设置牛腿，混凝土墙与预制底板、后浇叠合层的连接处为墙板节点区；预制底板包括板内第一预应力筋、波纹管、板内纵筋和板内桁架筋，板内第一预应力筋位于预制底板底部，用于对预制底板施加预应力，板内桁架筋伸出预制底板的上表面；后浇叠合层上部绑扎双向分布钢筋；板内纵筋与双向分布钢筋穿入墙板节点区；内张预应力筋穿过波纹管并在后浇叠合层两端形成锚固端，在预制底板跨中底部形成张拉端。本发明分阶段张拉预应力筋，能免除临时支撑的使用，降低成本，减少预应力筋数量，防止预制构件反拱变形与开裂破坏。
Internal tensioning prestress large-span subway station wallboard structure and construction method thereof
一种内张预应力大跨地铁车站墙板结构及其施工方法
WANG CHUNLIN (author) / SUN ZEXUAN (author) / CUI TIANXIA (author) / ZENG BIN (author) / SHI HAIRONG (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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