A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Integral hoisting construction method for large-span beam string structure
The invention relates to the technical field of building construction, in particular to an integral hoisting construction method for a large-span beam string structure, which comprises the following steps of: unstressed splicing of main steel beams; mounting a lower chord high vanadium cable; a tensioning device is installed at the tensioning end, initial tensioning of the high-vanadium cable is conducted, and one-end tensioning is adopted till the designed initial tensioning value is reached; hoisting the beam string structure; secondary tensioning is carried out after all primary and secondary beams of the roof structure are installed, double control is adopted for inhaul cable tensioning, namely, the tension and the elongation value of the inhaul cable are controlled, deformation observation is enhanced in the tensioning process, and it is ensured that the construction process is safe and controllable. Partial prestress is formed through initial tensioning of the high-vanadium cable, so that the beam string structure is in an in-plane stable state in the hoisting process, a midspan auxiliary support does not need to be arranged, operability is high, construction is convenient, safe, stable, economical and reasonable, and the method has popularization value in large-span beam string structure construction.
本发明涉及建筑施工技术领域，具体为一种用于大跨度张弦梁整体吊装施工方法，包括以下步骤：主钢梁无应力拼装；下弦高钒索安装；在张拉端安装张拉装置，进行高钒索的初始张拉，张拉采用一端张拉，直至达到设计的初始张拉值；张弦梁吊装；二次张拉，待屋面结构的所有主次梁安装完毕后进行二次张拉，拉索张拉采用双控，即控制拉索的拉力和伸长值，张拉过程加强变形观测，确保施工过程安全可控。利用对高钒索的初始张拉形成部分预应力，使张弦梁在吊装过程中处于平面内稳定状态，无需设置跨中辅助支承，可操作性强，施工便捷，安全稳定，经济合理，在大跨度张弦梁施工中具有推广价值。
Integral hoisting construction method for large-span beam string structure
The invention relates to the technical field of building construction, in particular to an integral hoisting construction method for a large-span beam string structure, which comprises the following steps of: unstressed splicing of main steel beams; mounting a lower chord high vanadium cable; a tensioning device is installed at the tensioning end, initial tensioning of the high-vanadium cable is conducted, and one-end tensioning is adopted till the designed initial tensioning value is reached; hoisting the beam string structure; secondary tensioning is carried out after all primary and secondary beams of the roof structure are installed, double control is adopted for inhaul cable tensioning, namely, the tension and the elongation value of the inhaul cable are controlled, deformation observation is enhanced in the tensioning process, and it is ensured that the construction process is safe and controllable. Partial prestress is formed through initial tensioning of the high-vanadium cable, so that the beam string structure is in an in-plane stable state in the hoisting process, a midspan auxiliary support does not need to be arranged, operability is high, construction is convenient, safe, stable, economical and reasonable, and the method has popularization value in large-span beam string structure construction.
本发明涉及建筑施工技术领域，具体为一种用于大跨度张弦梁整体吊装施工方法，包括以下步骤：主钢梁无应力拼装；下弦高钒索安装；在张拉端安装张拉装置，进行高钒索的初始张拉，张拉采用一端张拉，直至达到设计的初始张拉值；张弦梁吊装；二次张拉，待屋面结构的所有主次梁安装完毕后进行二次张拉，拉索张拉采用双控，即控制拉索的拉力和伸长值，张拉过程加强变形观测，确保施工过程安全可控。利用对高钒索的初始张拉形成部分预应力，使张弦梁在吊装过程中处于平面内稳定状态，无需设置跨中辅助支承，可操作性强，施工便捷，安全稳定，经济合理，在大跨度张弦梁施工中具有推广价值。
Integral hoisting construction method for large-span beam string structure
一种用于大跨度张弦梁整体吊装施工方法
WANG GUOCHAO (author) / YOU ENKUI (author) / LI MINGLIANG (author) / ZHANG TENGFEI (author) / FU XIAOJIAN (author) / CAO JIANMING (author) / ZHAO SHILE (author) / HUANG HAORAN (author)
2024-02-20
Patent
Electronic Resource
Chinese
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