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A platform for research: civil engineering, architecture and urbanism
Method for accurately positioning and quickly assembling dry-connection cantilever bent cap
The invention relates to a method for accurately positioning and quickly assembling a dry-connection cantilever bent cap, which realizes accurate positioning and quick assembling of the dry-connectioncantilever bent cap by adopting a matched prefabricated segmented bent cap, an accurate positioning and assembling system and a temporary prestress device, and comprises the following steps of: matching the prefabricated segmented bent cap; hoisting a middle-section bent cap; applying epoxy resin binders on the splicing surfaces of the cantilever section bent caps, and matching with male and female paired shear keys and brackets of the splicing surfaces of the bent caps to form a fine positioning splicing system; hoisting the cantilever section bent cap and assembling on the middle section bent cap; installing a temporary prestress device of the segmental bent cap for temporary fixation; in the same way, installing a cantilever section bent cap on the other side; penetrating a capping beam prestressed steel strand; tensioning the prestressed steel strands in a grading manner; and performing grouting after the prestressed steel strands are tensioned. The matched prefabricated segmentedbent caps are adopted, the manufacturing difficulty of the bent cap splicing face formwork is reduced, and the splicing face coincidence degree is greatly improved; and a precise positioning and assembling system is adopted, so that the effects of quick positioning, high-efficiency shearing resistance and torsion resistance can be achieved.
本发明涉及一种干接悬臂盖梁精确定位快速拼装方法，采用匹配预制分段盖梁、精定位拼装系统、临时预应力装置，实现干接悬臂盖梁精确定位快速拼装，其步骤为：匹配预制分段盖梁；吊安装中段盖梁；悬臂段盖梁拼接面涂环氧树脂粘结剂，配合盖梁拼接面的公母配对剪力键及牛腿，形成精定位拼装系统；悬臂段盖梁吊装，拼装于中段盖梁；安装分段盖梁临时预应力装置以临时固定；同上步骤，安装另一侧悬臂段盖梁；穿盖梁预应力钢绞线；分级张拉预应力钢绞线；预应力钢绞线张拉后进行压浆。本发明采用匹配预制分段盖梁，减小盖梁拼接面模板制作难度，并极大提高拼接面吻合度；采用精定位拼装系统，能达到快速定位、高效抗剪及抗扭的效果。
Method for accurately positioning and quickly assembling dry-connection cantilever bent cap
The invention relates to a method for accurately positioning and quickly assembling a dry-connection cantilever bent cap, which realizes accurate positioning and quick assembling of the dry-connectioncantilever bent cap by adopting a matched prefabricated segmented bent cap, an accurate positioning and assembling system and a temporary prestress device, and comprises the following steps of: matching the prefabricated segmented bent cap; hoisting a middle-section bent cap; applying epoxy resin binders on the splicing surfaces of the cantilever section bent caps, and matching with male and female paired shear keys and brackets of the splicing surfaces of the bent caps to form a fine positioning splicing system; hoisting the cantilever section bent cap and assembling on the middle section bent cap; installing a temporary prestress device of the segmental bent cap for temporary fixation; in the same way, installing a cantilever section bent cap on the other side; penetrating a capping beam prestressed steel strand; tensioning the prestressed steel strands in a grading manner; and performing grouting after the prestressed steel strands are tensioned. The matched prefabricated segmentedbent caps are adopted, the manufacturing difficulty of the bent cap splicing face formwork is reduced, and the splicing face coincidence degree is greatly improved; and a precise positioning and assembling system is adopted, so that the effects of quick positioning, high-efficiency shearing resistance and torsion resistance can be achieved.
本发明涉及一种干接悬臂盖梁精确定位快速拼装方法，采用匹配预制分段盖梁、精定位拼装系统、临时预应力装置，实现干接悬臂盖梁精确定位快速拼装，其步骤为：匹配预制分段盖梁；吊安装中段盖梁；悬臂段盖梁拼接面涂环氧树脂粘结剂，配合盖梁拼接面的公母配对剪力键及牛腿，形成精定位拼装系统；悬臂段盖梁吊装，拼装于中段盖梁；安装分段盖梁临时预应力装置以临时固定；同上步骤，安装另一侧悬臂段盖梁；穿盖梁预应力钢绞线；分级张拉预应力钢绞线；预应力钢绞线张拉后进行压浆。本发明采用匹配预制分段盖梁，减小盖梁拼接面模板制作难度，并极大提高拼接面吻合度；采用精定位拼装系统，能达到快速定位、高效抗剪及抗扭的效果。
Method for accurately positioning and quickly assembling dry-connection cantilever bent cap
干接悬臂盖梁精确定位快速拼装方法
LIAN HAIJIAN (author) / ZHANG ZHENHUA (author) / LI ZHONGYAN (author) / LIU ZHAOPENG (author)
2021-03-02
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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