A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to a beam string prestress applying device and method. The beam string prestress applying device comprises supporting rods, a connector of a prestress applying device is fixedlyarranged at the tail end of each supporting rod, and at least two movable heads are evenly arranged on each connector; at least one pair of prestress applying devices of a foundation pit support structure is arranged in the middles of the two or more movable heads; movable space is formed in each movable head, an inclined plane is arranged on one side of each movable space, a guide groove is formed in the position corresponding to each inclined plane, a wedge block can be inserted into each guide groove, and the inclination angles of the wedge blocks and the inclined planes are mutually complementary; and according to needs, filling plates can be detached into the movable space, so that the movable heads and the foundation pit support structure are tightly supported. Prestress is applied to the ends of the supporting rods, construction is convenient and fast, and the construction process is safe and stable; pre-pressure is applied, and the pressure is maintained through the steel wedgeblocks, so that the pre-stress loss is low; and prestress can be conveniently applied multiple times, and foundation pit safety can be dynamically guaranteed.
本发明涉及一种张弦梁预应力施加装置和方法。一种张弦梁预应力施加装置，包括撑杆，所述撑杆末端固定设置一预应力施加装置的接头，所述接头上均匀布置至少2个活动头；2个或多个活动头的中间部位布置至少一对基坑围护结构的预应力施加装置；所述活动头内部具有一活动空间，活动空间一侧具有一斜面，斜面对应的部位具有一导向槽，所述导向槽内可插入一楔块，所述楔块的倾角与所述斜面相互补；根据需要，所述活动空间内可拆入填板，使活动头与基坑围护结构撑紧。本发明采用对撑杆端头施加预应力，施工方便快捷，施工过程安全稳定；施加预压力，并通过钢楔块保压，预应力损失少；方便多次施加预应力，能够动态保证基坑安全。
The invention relates to a beam string prestress applying device and method. The beam string prestress applying device comprises supporting rods, a connector of a prestress applying device is fixedlyarranged at the tail end of each supporting rod, and at least two movable heads are evenly arranged on each connector; at least one pair of prestress applying devices of a foundation pit support structure is arranged in the middles of the two or more movable heads; movable space is formed in each movable head, an inclined plane is arranged on one side of each movable space, a guide groove is formed in the position corresponding to each inclined plane, a wedge block can be inserted into each guide groove, and the inclination angles of the wedge blocks and the inclined planes are mutually complementary; and according to needs, filling plates can be detached into the movable space, so that the movable heads and the foundation pit support structure are tightly supported. Prestress is applied to the ends of the supporting rods, construction is convenient and fast, and the construction process is safe and stable; pre-pressure is applied, and the pressure is maintained through the steel wedgeblocks, so that the pre-stress loss is low; and prestress can be conveniently applied multiple times, and foundation pit safety can be dynamically guaranteed.
本发明涉及一种张弦梁预应力施加装置和方法。一种张弦梁预应力施加装置，包括撑杆，所述撑杆末端固定设置一预应力施加装置的接头，所述接头上均匀布置至少2个活动头；2个或多个活动头的中间部位布置至少一对基坑围护结构的预应力施加装置；所述活动头内部具有一活动空间，活动空间一侧具有一斜面，斜面对应的部位具有一导向槽，所述导向槽内可插入一楔块，所述楔块的倾角与所述斜面相互补；根据需要，所述活动空间内可拆入填板，使活动头与基坑围护结构撑紧。本发明采用对撑杆端头施加预应力，施工方便快捷，施工过程安全稳定；施加预压力，并通过钢楔块保压，预应力损失少；方便多次施加预应力，能够动态保证基坑安全。
Joint assembly for applying prestress and prestress applying method
| European Patent Office | 2023
Prestress device for prestress FRP sheet material reinforced concrete beam and applying method
| European Patent Office | 2015
Beam string structure with foundation pit self-locking jack vertical rods applying prestress
| European Patent Office | 2021