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A platform for research: civil engineering, architecture and urbanism
Construction method and structure of three-direction unbonded prestressed crossed beam-column joint
The invention discloses a construction method and structure of a three-direction unbonded prestressed crossed beam-column joint. The construction process flow comprises the following steps of a, hoisting construction of assembly structure columns; b, hoisting a longitudinal superposed T-shaped beam under a plate in place, and carrying out perforating operation on outwards-extending unbonded prestressed tendons; c, hoisting two transverse superposed T beams under the plate in place, and carrying out cross perforation operation on the outwards-extending unbonded prestressed tendons; d, connecting under-plate longitudinal and transverse two-way superposed T-shaped beams with column reinforcing steel bars; e, hoisting laminated slabs in place, and anchoring the overhanging steel bars of the laminated slab into the laminated beams; f, pre-burying heat preservation plates in local variable cross-section sections of the top surfaces of the assembly structure columns; g, carrying out concretepouring and curing on the post-pouring section; h, removing pre-buried heat preservation plates at the local variable cross-section section of the column top, and tensioning and anchoring prestressedtendons; k, mutually crossing, tensioning and anchoring the two transverse superimposed T-beam unbonded prestressed tendons under the plate at the end parts of the cross sections of the T-beams; m, grouting and plugging a hole; and n, prestressed duct grouting. According to the construction method, the column-beam joint strength is improved, the earthquake resistance is good, and the column-beam joint plays an important role in promoting better transformation of the construction industry in China.
本发明公开了一种三方位无粘结预应力交叉梁柱节点施工方法及构造，其施工工艺流程包括：a.装配结构柱吊装施工；b.板下纵向叠合T梁吊装就位，外伸无粘结预应力筋穿孔作业；c.板下横向两叠合T梁吊装就位，外伸无粘结预应力筋交叉穿孔作业；d.板下纵横双向叠合T梁与柱钢筋连接；e.叠合板吊装就位，叠合板外伸钢筋锚入叠合梁内；f.装配结构柱顶面局部变截面段预埋保温板块；g.后浇段混凝土浇筑、养护；h.柱顶局部变截面段预埋保温板块剔除，预应力筋张拉锚固；k.板下横向两叠合T梁无粘结预应力筋在T梁截面端部相互交叉张拉锚固；m.孔洞灌浆封堵；n.预应力孔道灌浆。本发明提高了柱梁节点强度，抗震性好，对推进我国建筑业更好转型具有重要作用。
Construction method and structure of three-direction unbonded prestressed crossed beam-column joint
The invention discloses a construction method and structure of a three-direction unbonded prestressed crossed beam-column joint. The construction process flow comprises the following steps of a, hoisting construction of assembly structure columns; b, hoisting a longitudinal superposed T-shaped beam under a plate in place, and carrying out perforating operation on outwards-extending unbonded prestressed tendons; c, hoisting two transverse superposed T beams under the plate in place, and carrying out cross perforation operation on the outwards-extending unbonded prestressed tendons; d, connecting under-plate longitudinal and transverse two-way superposed T-shaped beams with column reinforcing steel bars; e, hoisting laminated slabs in place, and anchoring the overhanging steel bars of the laminated slab into the laminated beams; f, pre-burying heat preservation plates in local variable cross-section sections of the top surfaces of the assembly structure columns; g, carrying out concretepouring and curing on the post-pouring section; h, removing pre-buried heat preservation plates at the local variable cross-section section of the column top, and tensioning and anchoring prestressedtendons; k, mutually crossing, tensioning and anchoring the two transverse superimposed T-beam unbonded prestressed tendons under the plate at the end parts of the cross sections of the T-beams; m, grouting and plugging a hole; and n, prestressed duct grouting. According to the construction method, the column-beam joint strength is improved, the earthquake resistance is good, and the column-beam joint plays an important role in promoting better transformation of the construction industry in China.
本发明公开了一种三方位无粘结预应力交叉梁柱节点施工方法及构造，其施工工艺流程包括：a.装配结构柱吊装施工；b.板下纵向叠合T梁吊装就位，外伸无粘结预应力筋穿孔作业；c.板下横向两叠合T梁吊装就位，外伸无粘结预应力筋交叉穿孔作业；d.板下纵横双向叠合T梁与柱钢筋连接；e.叠合板吊装就位，叠合板外伸钢筋锚入叠合梁内；f.装配结构柱顶面局部变截面段预埋保温板块；g.后浇段混凝土浇筑、养护；h.柱顶局部变截面段预埋保温板块剔除，预应力筋张拉锚固；k.板下横向两叠合T梁无粘结预应力筋在T梁截面端部相互交叉张拉锚固；m.孔洞灌浆封堵；n.预应力孔道灌浆。本发明提高了柱梁节点强度，抗震性好，对推进我国建筑业更好转型具有重要作用。
Construction method and structure of three-direction unbonded prestressed crossed beam-column joint
一种三方位无粘结预应力交叉梁柱节点施工方法及构造
ZHANG WEIGUO (author) / XU ZHUO (author) / DING WEI (author) / CHEN XUEJUN (author) / WANG SIHAI (author) / CAI MING (author)
2021-03-12
Patent
Electronic Resource
Chinese
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