Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a method for reinforcing a composite foundation by combining dynamic compaction with immersed tube compaction gravel piles. The method comprises the following steps: S1, positioning a compaction point; s2, point tamping operation is carried out; s3, pit tamping and backfilling; s4, after full compaction is completed, the site is leveled and compacted through rolling; s5, determining the position of a pile hole; s6, vibration tube sinking; s7, stopping the vibration immersed tube when the vibration immersed tube sinks to a hard soil layer below the soft soil layer; s8, graded broken stone is added into the hopper, the silt content of the graded broken stone is not larger than 5%, the maximum particle size of the graded broken stone is not larger than 50 mm, the graded broken stone is injected into the immersed tube, the injection depth each time is 1 m, and the immersed tube is pulled out while vibration is conducted; s9, when the sinking elevation of the gravel reaches the boundary of the soft soil layer and the soil layer on the upper portion of the soft soil layer, gravel soil is adopted as filler, the gravel soil is injected in the same mode, the injection depth of each time is 1 m, and the sinking pipe is pulled out while vibration is conducted till the sinking pipe is pulled out of the ground; and S10, the pile driver is moved to the next pile position, and the steps S6-S10 are repeated. According to the invention, the site bearing capacity can be met, and the effect of controlling later settlement can be achieved.
本发明涉及一种强夯联合沉管挤密砂石桩的复合地基加固方法，包括如下步骤：S1、夯击点定位；S2、点夯作业；S3、夯坑回填；S4、满夯完成后整平场地并碾压密实；S5、确定桩孔位置；S6、振动沉管；S7、当振动沉管下沉至软弱土层下方的硬质土层时停止振动沉管；S8、在料斗中加入级配碎石，级配碎石含泥量不大于5％，最大粒径不大于50mm，往沉管中注入级配碎石，每次注入深度为1m，边振动边拔沉管；S9、当碎石沉入标高达到软弱土层与其上部土层分界处时，填料采用碎石土，采用相同的方式注入碎石土，每次注入深度为1m，边振动边拔沉管，直至拔出地面；S10、移动打桩机至下一个桩位，重复S6～S10步骤。本发明能满足场地承载力，切能起到控制后期沉降的作用。
The invention relates to a method for reinforcing a composite foundation by combining dynamic compaction with immersed tube compaction gravel piles. The method comprises the following steps: S1, positioning a compaction point; s2, point tamping operation is carried out; s3, pit tamping and backfilling; s4, after full compaction is completed, the site is leveled and compacted through rolling; s5, determining the position of a pile hole; s6, vibration tube sinking; s7, stopping the vibration immersed tube when the vibration immersed tube sinks to a hard soil layer below the soft soil layer; s8, graded broken stone is added into the hopper, the silt content of the graded broken stone is not larger than 5%, the maximum particle size of the graded broken stone is not larger than 50 mm, the graded broken stone is injected into the immersed tube, the injection depth each time is 1 m, and the immersed tube is pulled out while vibration is conducted; s9, when the sinking elevation of the gravel reaches the boundary of the soft soil layer and the soil layer on the upper portion of the soft soil layer, gravel soil is adopted as filler, the gravel soil is injected in the same mode, the injection depth of each time is 1 m, and the sinking pipe is pulled out while vibration is conducted till the sinking pipe is pulled out of the ground; and S10, the pile driver is moved to the next pile position, and the steps S6-S10 are repeated. According to the invention, the site bearing capacity can be met, and the effect of controlling later settlement can be achieved.
本发明涉及一种强夯联合沉管挤密砂石桩的复合地基加固方法，包括如下步骤：S1、夯击点定位；S2、点夯作业；S3、夯坑回填；S4、满夯完成后整平场地并碾压密实；S5、确定桩孔位置；S6、振动沉管；S7、当振动沉管下沉至软弱土层下方的硬质土层时停止振动沉管；S8、在料斗中加入级配碎石，级配碎石含泥量不大于5％，最大粒径不大于50mm，往沉管中注入级配碎石，每次注入深度为1m，边振动边拔沉管；S9、当碎石沉入标高达到软弱土层与其上部土层分界处时，填料采用碎石土，采用相同的方式注入碎石土，每次注入深度为1m，边振动边拔沉管，直至拔出地面；S10、移动打桩机至下一个桩位，重复S6～S10步骤。本发明能满足场地承载力，切能起到控制后期沉降的作用。
Method for reinforcing composite foundation through combination of dynamic compaction and immersed tube compaction of gravel piles
强夯联合沉管挤密砂石桩的复合地基加固方法
08.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method for treating bridgehead soft foundation through gravel compaction piles
| Europäisches Patentamt | 2022
Reinforcing method for dynamic compaction gravel compaction pile in high fill area
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
Immersed tunnel foundation on marine clay improved by sand compaction piles
| Taylor & Francis Verlag | 2018
Foundation dynamic compaction reinforcing method and device
| Europäisches Patentamt | 2024