Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for reinforcing H-shaped steel bottom karst cave of SMW construction method pile
The invention discloses a construction method for reinforcing an H-shaped steel bottom karst cave of an SMW construction method pile, the construction method comprises the following steps that firstly, a floral tube and a solid tube are welded together, and grouting holes with the diameter of 10 mm are formed in the side wall of the floral tube at intervals of 0.5 m in a staggered manner; then, drilling is carried out in an area where the karst cave is located until the depth of a drilled hole reaches the limestone position of a karst cave bottom plate; and finally, part of the floral tube isplaced into the drilled hole, so that the floral tube is arranged between a top plate and the bottom plate of the karst cave, and meanwhile, the upper end of the solid tube extends out of the ground by 0.3-0.5 m. According to the construction method, the problems that in the construction process of the SMW construction method pile at the karst cave part, sinking and inclining are prone to happening, and the bearing capacity of the pile bottom cannot meet the design requirement are effectively solved, the karst cave soil body reinforcing effect can be effectively achieved, and the bearing capacity requirement of the H-shaped steel bottom of the SMW construction method pile is guaranteed.
本发明公开了一种用于SMW工法桩H型钢底溶洞加固的施工方法，该方法是首先将花管和实管焊接在一起，并在花管的侧壁上每隔0.5m交错地开设直径为10mm的注浆孔，然后在溶洞所在区域钻孔，钻孔深至溶洞底板灰岩位置，再将花管部分放入钻孔中，使花管置于溶洞的顶板和底板之间，同时使实管的上端伸出地面0.3～0.5m。本发明有效地解决了在溶洞部位SMW工法桩施工过程中容易发生下沉、倾斜、桩底承载力达不到设计要求等施工难题，可以有效达到溶洞土体加固的效果，保证SMW工法桩H型钢底的承载力要求。
Construction method for reinforcing H-shaped steel bottom karst cave of SMW construction method pile
The invention discloses a construction method for reinforcing an H-shaped steel bottom karst cave of an SMW construction method pile, the construction method comprises the following steps that firstly, a floral tube and a solid tube are welded together, and grouting holes with the diameter of 10 mm are formed in the side wall of the floral tube at intervals of 0.5 m in a staggered manner; then, drilling is carried out in an area where the karst cave is located until the depth of a drilled hole reaches the limestone position of a karst cave bottom plate; and finally, part of the floral tube isplaced into the drilled hole, so that the floral tube is arranged between a top plate and the bottom plate of the karst cave, and meanwhile, the upper end of the solid tube extends out of the ground by 0.3-0.5 m. According to the construction method, the problems that in the construction process of the SMW construction method pile at the karst cave part, sinking and inclining are prone to happening, and the bearing capacity of the pile bottom cannot meet the design requirement are effectively solved, the karst cave soil body reinforcing effect can be effectively achieved, and the bearing capacity requirement of the H-shaped steel bottom of the SMW construction method pile is guaranteed.
本发明公开了一种用于SMW工法桩H型钢底溶洞加固的施工方法，该方法是首先将花管和实管焊接在一起，并在花管的侧壁上每隔0.5m交错地开设直径为10mm的注浆孔，然后在溶洞所在区域钻孔，钻孔深至溶洞底板灰岩位置，再将花管部分放入钻孔中，使花管置于溶洞的顶板和底板之间，同时使实管的上端伸出地面0.3～0.5m。本发明有效地解决了在溶洞部位SMW工法桩施工过程中容易发生下沉、倾斜、桩底承载力达不到设计要求等施工难题，可以有效达到溶洞土体加固的效果，保证SMW工法桩H型钢底的承载力要求。
Construction method for reinforcing H-shaped steel bottom karst cave of SMW construction method pile
一种用于SMW工法桩H型钢底溶洞加固的施工方法
YI XIANNENG (Autor:in) / LIN WENSHUO (Autor:in) / LIN RONGYUN (Autor:in) / JI FANG (Autor:in)
02.02.2021
Patent
Elektronische Ressource
Chinesisch
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