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A platform for research: civil engineering, architecture and urbanism
Steel pipe support grouting small-diameter steel pipe pile foundation structure
The invention discloses a steel pipe support grouting small-diameter steel pipe pile foundation structure which comprises pile holes and pile groups which are arranged in an equal-diameter mode, the pile length design is controlled according to the depth of the pile embedded into a rock stratum, the center distance of the pile holes is not smaller than three times of the pile diameter, and drilling does not need large equipment. Carrying body small-diameter steel pipes and short sections are prefabricated, the two ends of the sections are subjected to threading treatment, and orifices are in equal-strength connection; cement slurry is injected under pressure, slurry permeates into surrounding soil, the resistance coefficient of the pile side is increased, and the requirement for vertical bearing capacity can be met through the short pile length; grout flows into an interlayer between the pile hole and the steel pipe pile from the grouting hole under the action of pressure; according to the connecting structure of the small-diameter steel pipe and the bearing platform, the length of the small-diameter steel pipe at the pile top penetrating into the bearing platform is not smaller than two times of the pipe diameter, and a circle of #-shaped reinforcing ribs are arranged at certain intervals to reinforce the bonding effect between the steel pipe and bearing platform concrete; the lower part of the bearing platform is connected with the bearing body steel pipe, and the upper part is connected with the steel pipe bracket upright post embedded part; a steel pipe stand column embedded part is in a structural form that a pressure-bearing steel plate is combined with foundation bolts for anchoring.
本发明公开了一种钢管支架注浆小直径钢管桩基础结构，包括：桩孔，群桩等直径布置，桩长设计以嵌入岩层的深度来控制，桩孔中心距不小于3倍桩径，钻孔无需大型设备；承载体小直径钢管，短节预制，节段两端套丝处理，孔口等强连接；水泥浆注浆体，压力注入，浆液渗入周围土体，增加桩侧阻力系数，较短的桩长即可满足竖向承载力需求；钢管注浆孔，浆液从注浆孔在压力作用下流入桩孔与钢管桩的夹层；小直径钢管与承台连接构造，桩顶小直径钢管深入承台长度不小于2倍管径，每隔一定距离设置一圈井字形加强筋，加强钢管与承台混凝土之间的粘结作用；承台，钢筋混凝土结构，下部与承载体钢管连接，上部与钢管支架立柱预埋件连接；钢管立柱预埋件，采用承压钢板结合地脚螺栓锚固的结构形式。
Steel pipe support grouting small-diameter steel pipe pile foundation structure
The invention discloses a steel pipe support grouting small-diameter steel pipe pile foundation structure which comprises pile holes and pile groups which are arranged in an equal-diameter mode, the pile length design is controlled according to the depth of the pile embedded into a rock stratum, the center distance of the pile holes is not smaller than three times of the pile diameter, and drilling does not need large equipment. Carrying body small-diameter steel pipes and short sections are prefabricated, the two ends of the sections are subjected to threading treatment, and orifices are in equal-strength connection; cement slurry is injected under pressure, slurry permeates into surrounding soil, the resistance coefficient of the pile side is increased, and the requirement for vertical bearing capacity can be met through the short pile length; grout flows into an interlayer between the pile hole and the steel pipe pile from the grouting hole under the action of pressure; according to the connecting structure of the small-diameter steel pipe and the bearing platform, the length of the small-diameter steel pipe at the pile top penetrating into the bearing platform is not smaller than two times of the pipe diameter, and a circle of #-shaped reinforcing ribs are arranged at certain intervals to reinforce the bonding effect between the steel pipe and bearing platform concrete; the lower part of the bearing platform is connected with the bearing body steel pipe, and the upper part is connected with the steel pipe bracket upright post embedded part; a steel pipe stand column embedded part is in a structural form that a pressure-bearing steel plate is combined with foundation bolts for anchoring.
本发明公开了一种钢管支架注浆小直径钢管桩基础结构，包括：桩孔，群桩等直径布置，桩长设计以嵌入岩层的深度来控制，桩孔中心距不小于3倍桩径，钻孔无需大型设备；承载体小直径钢管，短节预制，节段两端套丝处理，孔口等强连接；水泥浆注浆体，压力注入，浆液渗入周围土体，增加桩侧阻力系数，较短的桩长即可满足竖向承载力需求；钢管注浆孔，浆液从注浆孔在压力作用下流入桩孔与钢管桩的夹层；小直径钢管与承台连接构造，桩顶小直径钢管深入承台长度不小于2倍管径，每隔一定距离设置一圈井字形加强筋，加强钢管与承台混凝土之间的粘结作用；承台，钢筋混凝土结构，下部与承载体钢管连接，上部与钢管支架立柱预埋件连接；钢管立柱预埋件，采用承压钢板结合地脚螺栓锚固的结构形式。
Steel pipe support grouting small-diameter steel pipe pile foundation structure
一种钢管支架注浆小直径钢管桩基础结构
WU YUEQUAN (author) / BAI GUOSHENG (author) / ZHENG XUFENG (author) / CAO FAHUI (author) / LI XIAODI (author) / REN HAIBIN (author) / XU JIAN (author) / WANG YUANLIN (author) / HE FENG (author) / WU HAO (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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