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A platform for research: civil engineering, architecture and urbanism
Construction method for constructing immersed tube pile composite foundation
The invention discloses a construction method for constructing an immersed tube pile composite foundation, which adopts a large-diameter immersed tube device, and the device comprises an expanded section pile shoe, a semicircular plate door, a blanking pipe, a stock bin and a vibratory hammer. During construction, broken stones are added into the stock bin, the vibratory hammer is started, and the large-diameter pipe sinking device sinks downwards to be larger than the designed depth; in the process of downwards inserting into a soil body, the semicircular plate door is always in a closed state under the action of the limiting block; then the large-diameter pipe sinking device is lifted upwards, in the lifting process, the bottom face of the semicircular plate door is opened due to the fact that the supporting effect of the soil body is lost, gravel in the discharging pipe falls into the expanded section pile shoe, and the expanded section pile shoe is filled with the gravel; the vibratory hammer vibrates downwards, and the expanded section pile shoe is reversely inserted, so that the bottom of the gravel pile is in a good compact state; the large-diameter pipe sinking device is lifted upwards, and after one section of the large-diameter pipe sinking device is lifted each time, downward reverse insertion is conducted; and vibro-replacement operation is conducted section by section till the ground, and operation of one vibro-replacement gravel pile is completed.
本发明公开了一种构建沉管桩复合地基的施工方法，该方法采用一种大直径沉管装置，该装置包括扩大段桩靴、半圆板门、下料管、料仓和振动锤。施工时，向料仓内加入碎石，开启振动锤，将大直径沉管装置向下沉放到大于设计深度；在向下插入土体过程中，在限位块作用下半圆板门始终处于关闭状态；然后向上提升大直径沉管装置，提升过程中，半圆板门底面失去土体的支撑作用而打开，使得下料管内的碎石落入扩大段桩靴内，使扩大段桩靴内充满碎石；振动锤向下振动，扩大段桩靴反插，使得碎石桩底部密实状态良好；再向上提升大直径沉管装置，每次提升一段后，然后再向下反插；如此一段一段进行振冲作业，直至地面，完成一根振冲碎石桩作业。
Construction method for constructing immersed tube pile composite foundation
The invention discloses a construction method for constructing an immersed tube pile composite foundation, which adopts a large-diameter immersed tube device, and the device comprises an expanded section pile shoe, a semicircular plate door, a blanking pipe, a stock bin and a vibratory hammer. During construction, broken stones are added into the stock bin, the vibratory hammer is started, and the large-diameter pipe sinking device sinks downwards to be larger than the designed depth; in the process of downwards inserting into a soil body, the semicircular plate door is always in a closed state under the action of the limiting block; then the large-diameter pipe sinking device is lifted upwards, in the lifting process, the bottom face of the semicircular plate door is opened due to the fact that the supporting effect of the soil body is lost, gravel in the discharging pipe falls into the expanded section pile shoe, and the expanded section pile shoe is filled with the gravel; the vibratory hammer vibrates downwards, and the expanded section pile shoe is reversely inserted, so that the bottom of the gravel pile is in a good compact state; the large-diameter pipe sinking device is lifted upwards, and after one section of the large-diameter pipe sinking device is lifted each time, downward reverse insertion is conducted; and vibro-replacement operation is conducted section by section till the ground, and operation of one vibro-replacement gravel pile is completed.
本发明公开了一种构建沉管桩复合地基的施工方法，该方法采用一种大直径沉管装置，该装置包括扩大段桩靴、半圆板门、下料管、料仓和振动锤。施工时，向料仓内加入碎石，开启振动锤，将大直径沉管装置向下沉放到大于设计深度；在向下插入土体过程中，在限位块作用下半圆板门始终处于关闭状态；然后向上提升大直径沉管装置，提升过程中，半圆板门底面失去土体的支撑作用而打开，使得下料管内的碎石落入扩大段桩靴内，使扩大段桩靴内充满碎石；振动锤向下振动，扩大段桩靴反插，使得碎石桩底部密实状态良好；再向上提升大直径沉管装置，每次提升一段后，然后再向下反插；如此一段一段进行振冲作业，直至地面，完成一根振冲碎石桩作业。
Construction method for constructing immersed tube pile composite foundation
一种构建沉管桩复合地基的施工方法
ZHANG RUIQI (author) / LIU ZHAO (author) / LIU WENBIN (author) / LIU AIMIN (author) / YU JIAN (author) / ZHU NAN (author) / YUE CHANGXI (author)
2023-07-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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