Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-span asymmetric horseshoe-shaped multi-layer truss construction method
The invention discloses a large-span asymmetric horseshoe-shaped multi-layer truss construction method. A truss and a core tube are in butt joint through a cantilever bracket, the cantilever bracket is of a box-shaped structure, and the thickness of a web of an inward-extending cantilever bracket of the truss is different from that of a web of an outward-extending cantilever bracket of the core tube; the truss is assembled on the ground through a positioning jig frame, and the positioning jig frame is provided with a plurality of bearing units which are arranged in a scattered mode. A plurality of lifters mounted at the top of a steel tube column of the core tube are adopted to lift the truss integrally. When the truss is assembled, local fine adjustment is facilitated, precise positioning is achieved, and the assembling precision is improved conveniently; the pre-mounted inward-extending cantilever bracket is in butt joint with the outward-extending cantilever bracket on the core tube, effective measures are adopted for preventing interference, the field welding operation amount after lifting can be reduced, construction is facilitated, and the mounting quality is conveniently improved; a multi-point overall lifting method and effective measures are adopted to prevent deformation of the truss, butt joint errors are made up, and the mounting positioning efficiency and the mounting quality are greatly improved.
本发明公开了一种大跨度非对称马蹄形多层桁架施工工法，桁架与核心筒采用悬挑牛腿对接，悬挑牛腿采用箱型结构，桁架的内伸悬挑牛腿和核心筒的外伸悬挑牛腿腹板厚度不同；桁架在地面采用定位胎架拼装，定位胎架设有分散布置的多个支承单元；采用安装在核心筒钢管柱柱顶的多个提升器对桁架进行整体提升。采用本发明拼装桁架时便于局部微调，实现精准定位，便于提高拼装精度；采用预先安装的内伸悬挑牛腿与核心筒上的外伸悬挑牛腿对接，并采用有效措施防干涉，能够减少提升后现场焊接作业量，便于施工，便于提高安装质量；通过采用多点整体提升方法并采用有效措施防止桁架变形、弥补对接误差，极大地提高了安装定位效率和安装质量。
Large-span asymmetric horseshoe-shaped multi-layer truss construction method
The invention discloses a large-span asymmetric horseshoe-shaped multi-layer truss construction method. A truss and a core tube are in butt joint through a cantilever bracket, the cantilever bracket is of a box-shaped structure, and the thickness of a web of an inward-extending cantilever bracket of the truss is different from that of a web of an outward-extending cantilever bracket of the core tube; the truss is assembled on the ground through a positioning jig frame, and the positioning jig frame is provided with a plurality of bearing units which are arranged in a scattered mode. A plurality of lifters mounted at the top of a steel tube column of the core tube are adopted to lift the truss integrally. When the truss is assembled, local fine adjustment is facilitated, precise positioning is achieved, and the assembling precision is improved conveniently; the pre-mounted inward-extending cantilever bracket is in butt joint with the outward-extending cantilever bracket on the core tube, effective measures are adopted for preventing interference, the field welding operation amount after lifting can be reduced, construction is facilitated, and the mounting quality is conveniently improved; a multi-point overall lifting method and effective measures are adopted to prevent deformation of the truss, butt joint errors are made up, and the mounting positioning efficiency and the mounting quality are greatly improved.
本发明公开了一种大跨度非对称马蹄形多层桁架施工工法，桁架与核心筒采用悬挑牛腿对接，悬挑牛腿采用箱型结构，桁架的内伸悬挑牛腿和核心筒的外伸悬挑牛腿腹板厚度不同；桁架在地面采用定位胎架拼装，定位胎架设有分散布置的多个支承单元；采用安装在核心筒钢管柱柱顶的多个提升器对桁架进行整体提升。采用本发明拼装桁架时便于局部微调，实现精准定位，便于提高拼装精度；采用预先安装的内伸悬挑牛腿与核心筒上的外伸悬挑牛腿对接，并采用有效措施防干涉，能够减少提升后现场焊接作业量，便于施工，便于提高安装质量；通过采用多点整体提升方法并采用有效措施防止桁架变形、弥补对接误差，极大地提高了安装定位效率和安装质量。
Large-span asymmetric horseshoe-shaped multi-layer truss construction method
大跨度非对称马蹄形多层桁架施工工法
WEI HEXIN (Autor:in) / LI XINLEI (Autor:in) / GUO YING (Autor:in) / GAO PU (Autor:in) / GU JUNBING (Autor:in)
17.12.2021
Patent
Elektronische Ressource
Chinesisch
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