A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Drawing type variable cross-section box girder inner formwork
The invention provides a drawing type variable cross-section box girder inner formwork. The inner formwork is divided into four blocks, the left formwork and the right formwork are hinged through pin shafts and can rotate around the shafts, and the integrity is good. Compared with original inner formwork assembly modes, the welding and riveting amount is small, operation is easy, and repeated assembly and use can be achieved. Longitudinal pull rods are arranged on the variable cross-section section of the inner formwork in a full-length mode, a first steel plate and a fourth steel plate are uniformly arranged, a second steel plate and a third steel plate are increased along with height increase of the formwork, the pull rods are obliquely arranged, up-down angular momentum can be effectively balanced, the folding amount of the upper formwork and the lower formwork is greatly increased, and the formworks are separated from the surface of concrete at the same time. The folded variable-cross-section formwork can be smoothly pulled out from the small-cross-section port, the contact area between the formwork and the inner wall of a poured box girder is small in the pulling-out process, the situation that concrete at the girder port is broken and falls off or even the formwork is extruded and deformed due to the fact that the inner formwork is forcibly pulled out is avoided, and the quality of poured concrete is guaranteed.
本发明提供一种抽拉式变截面箱梁内模板，内模板分为四大块，其中左、右模均通过销轴铰接可绕轴转动，整体性好，与原有内模板组装方式相比，焊接、铆接量少，操作简单且可重复组装使用。而且本发明中纵向拉杆在内模板变截面段通长设置，统一设置第一、四块钢板长短尺寸不变，第二、三块钢板随模板高度增高而增长，倾斜设置拉杆可以有效平衡上下角动量，大幅增大上下模板收合量，使模板上下同时脱离混凝土表面，折叠后的变截面模板可从小截面端口顺利拉出，拉出过程中模板与浇筑箱梁内壁接触面积小，避免了强行拉出内模板造成梁端口混凝土破碎、脱落，甚至模板被挤压变形的情况发生，保证了浇筑混凝土的质量。
Drawing type variable cross-section box girder inner formwork
The invention provides a drawing type variable cross-section box girder inner formwork. The inner formwork is divided into four blocks, the left formwork and the right formwork are hinged through pin shafts and can rotate around the shafts, and the integrity is good. Compared with original inner formwork assembly modes, the welding and riveting amount is small, operation is easy, and repeated assembly and use can be achieved. Longitudinal pull rods are arranged on the variable cross-section section of the inner formwork in a full-length mode, a first steel plate and a fourth steel plate are uniformly arranged, a second steel plate and a third steel plate are increased along with height increase of the formwork, the pull rods are obliquely arranged, up-down angular momentum can be effectively balanced, the folding amount of the upper formwork and the lower formwork is greatly increased, and the formworks are separated from the surface of concrete at the same time. The folded variable-cross-section formwork can be smoothly pulled out from the small-cross-section port, the contact area between the formwork and the inner wall of a poured box girder is small in the pulling-out process, the situation that concrete at the girder port is broken and falls off or even the formwork is extruded and deformed due to the fact that the inner formwork is forcibly pulled out is avoided, and the quality of poured concrete is guaranteed.
本发明提供一种抽拉式变截面箱梁内模板，内模板分为四大块，其中左、右模均通过销轴铰接可绕轴转动，整体性好，与原有内模板组装方式相比，焊接、铆接量少，操作简单且可重复组装使用。而且本发明中纵向拉杆在内模板变截面段通长设置，统一设置第一、四块钢板长短尺寸不变，第二、三块钢板随模板高度增高而增长，倾斜设置拉杆可以有效平衡上下角动量，大幅增大上下模板收合量，使模板上下同时脱离混凝土表面，折叠后的变截面模板可从小截面端口顺利拉出，拉出过程中模板与浇筑箱梁内壁接触面积小，避免了强行拉出内模板造成梁端口混凝土破碎、脱落，甚至模板被挤压变形的情况发生，保证了浇筑混凝土的质量。
Drawing type variable cross-section box girder inner formwork
一种抽拉式变截面箱梁内模板
YAN ZHENHU (author) / GUO YICHEN (author) / GONG CHANGHUA (author) / CHEN XIUWEN (author) / TANG KUN (author) / ZHANG PING (author) / LIANG BIN (author)
2021-07-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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