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Method for reinforcing bearing capacity of prefabricated floor slab
A method for reinforcing the bearing capacity of a prefabricated floor slab comprises the steps that T-shaped steel, screws, perforated steel plates and nuts are combined and fixed to an original prefabricated slab. Before construction, a plaster leveling layer on the bottom face of a prefabricated floor slab is removed, slab joints of the prefabricated slab are cleaned, a T-shaped steel web welded with a screw rod is arranged between the slab joints, a T-shaped steel wing plate is tightly attached to the bottom of the prefabricated slab, and a support abuts against the lower portion of the T-shaped steel wing plate to fix the T-shaped steel wing plate. And grouting materials are filled in slab joints of the T-shaped steel and the prefabricated slab, and after trowelling, a curing agent is sprayed for curing. Maintaining and cleaning the ground, mounting a perforated steel plate within one day after cleaning, pre-screwing a nut to achieve a temporary fixing effect, tightening by using a torque wrench, and welding and fixing the steel beam and the T-shaped steel. And after the strength of the grouting material meets the requirement, the lower support is removed, and structural reinforcement is completed. The prefabricated floor slab which is damaged or seriously loses bearing capacity can be reinforced under the conditions that an original floor slab is not damaged and unfavorable dead weight is not increased.
一种预制楼板承载力加固方法，包括T型钢，螺杆，开孔钢板与螺帽，通过组合，将其与原有预制板固定。施工前将预制楼板底面的抹灰找平层清除，清理预制板板缝，将焊接螺杆的T型钢腹板置于板缝间，T型钢翼板紧贴预制板底部，将支撑顶住T型钢翼板下部，对其进行固定。在T型钢与预制板的板缝间填充灌浆料，抹平后喷洒养护剂养护。养护并清扫地面，清扫完毕一天内安装开孔钢板，预拧螺帽达到暂时固定效果，然后使用扭矩扳手上紧，将钢梁与T型钢焊接固定。在灌浆料强度达到要求后拆除下部支撑，完成结构加固。可以在不损坏原有楼板、不增加不利自重的情况下对已经损坏或承载力损失严重的预制楼板进行加固。
Method for reinforcing bearing capacity of prefabricated floor slab
A method for reinforcing the bearing capacity of a prefabricated floor slab comprises the steps that T-shaped steel, screws, perforated steel plates and nuts are combined and fixed to an original prefabricated slab. Before construction, a plaster leveling layer on the bottom face of a prefabricated floor slab is removed, slab joints of the prefabricated slab are cleaned, a T-shaped steel web welded with a screw rod is arranged between the slab joints, a T-shaped steel wing plate is tightly attached to the bottom of the prefabricated slab, and a support abuts against the lower portion of the T-shaped steel wing plate to fix the T-shaped steel wing plate. And grouting materials are filled in slab joints of the T-shaped steel and the prefabricated slab, and after trowelling, a curing agent is sprayed for curing. Maintaining and cleaning the ground, mounting a perforated steel plate within one day after cleaning, pre-screwing a nut to achieve a temporary fixing effect, tightening by using a torque wrench, and welding and fixing the steel beam and the T-shaped steel. And after the strength of the grouting material meets the requirement, the lower support is removed, and structural reinforcement is completed. The prefabricated floor slab which is damaged or seriously loses bearing capacity can be reinforced under the conditions that an original floor slab is not damaged and unfavorable dead weight is not increased.
一种预制楼板承载力加固方法，包括T型钢，螺杆，开孔钢板与螺帽，通过组合，将其与原有预制板固定。施工前将预制楼板底面的抹灰找平层清除，清理预制板板缝，将焊接螺杆的T型钢腹板置于板缝间，T型钢翼板紧贴预制板底部，将支撑顶住T型钢翼板下部，对其进行固定。在T型钢与预制板的板缝间填充灌浆料，抹平后喷洒养护剂养护。养护并清扫地面，清扫完毕一天内安装开孔钢板，预拧螺帽达到暂时固定效果，然后使用扭矩扳手上紧，将钢梁与T型钢焊接固定。在灌浆料强度达到要求后拆除下部支撑，完成结构加固。可以在不损坏原有楼板、不增加不利自重的情况下对已经损坏或承载力损失严重的预制楼板进行加固。
Method for reinforcing bearing capacity of prefabricated floor slab
一种预制楼板承载力加固方法
JIANG DEWEN (author) / LIU QIANG (author) / TIAN ANGUO (author) / YAO JINWEN (author) / LI QINGSONG (author) / CHEN SHUNYU (author) / HUANG YIPING (author)
2022-04-15
Patent
Electronic Resource
Chinese
IPC:
E04G
SCAFFOLDING
,
Baugerüste
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