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Mechanical compaction and grouting construction method for cast-in-place pile bottom sediment treatment
The invention relates to a mechanical compaction and grouting construction method for cast-in-place pile bottom sediment treatment. The method comprises the following construction steps that S1, a hydraulic pushing grouting device and a high-pressure grouting device are fixed at the bottom end of a reinforcement cage, and the reinforcement cage is hanged and placed into a designed depth position in a pile hole; S2, pouring is carried out on the pile hole through a concrete guide pipe to form a reinforced concrete cast-in-place pile; S3, after the cast-in-place pile is maintained for 1-3 days, a hydraulic station is started to downwards push a pressing plate in a hydraulic extrusion device in the axial direction of the cast-in-place pile, and a concrete and sediment mixture at the bottom of the cast-in-place pile is strongly compacted and compacted; S4, the concrete pile section at the bottom of the cast-in-place pile can generate a transverse crack space, and cement paste is subjected to high-pressure grouting to the crack space and the pile side through a grouting pipeline under the high-pressure effect until the standard is reached; and S5, after high-pressure grouting is conducted for several days, compaction and solidification of the concrete and sediment mixture at the bottom of the cast-in-place pile can be completed. The mechanical compaction and grouting construction method can improve the strength of the pile end concrete and sediment mixture and the bearing capacity of the foundation pile.
本发明涉及一种用于灌注桩底沉渣处理的机械挤密及注浆施工方法，包括如下施工步骤：S1、将液压顶推注浆装置和高压注浆装置固定在钢筋笼底端，并将钢筋笼吊放入桩孔内的设计深度位置，S2、通过混凝土导管对桩孔进行灌注，形成钢筋混凝土灌注桩；S3、待灌注桩养护1～3天后，启动液压站将液压挤压装置内的压板沿灌注桩轴向向下顶推，将灌注桩底部混凝土与沉渣混合物强力压实挤密；S4、灌注桩底部混凝土桩段会产生横向裂隙空间，水泥浆在高压作用下通过注浆管路向裂隙空间及桩侧进行高压注浆直至达标为止；S5、待高压注浆数天后，灌注桩底混凝土与沉渣混合物可完成挤密与固化；本发明能提高桩端混凝土与沉渣混合物强度及基桩承载力。
Mechanical compaction and grouting construction method for cast-in-place pile bottom sediment treatment
The invention relates to a mechanical compaction and grouting construction method for cast-in-place pile bottom sediment treatment. The method comprises the following construction steps that S1, a hydraulic pushing grouting device and a high-pressure grouting device are fixed at the bottom end of a reinforcement cage, and the reinforcement cage is hanged and placed into a designed depth position in a pile hole; S2, pouring is carried out on the pile hole through a concrete guide pipe to form a reinforced concrete cast-in-place pile; S3, after the cast-in-place pile is maintained for 1-3 days, a hydraulic station is started to downwards push a pressing plate in a hydraulic extrusion device in the axial direction of the cast-in-place pile, and a concrete and sediment mixture at the bottom of the cast-in-place pile is strongly compacted and compacted; S4, the concrete pile section at the bottom of the cast-in-place pile can generate a transverse crack space, and cement paste is subjected to high-pressure grouting to the crack space and the pile side through a grouting pipeline under the high-pressure effect until the standard is reached; and S5, after high-pressure grouting is conducted for several days, compaction and solidification of the concrete and sediment mixture at the bottom of the cast-in-place pile can be completed. The mechanical compaction and grouting construction method can improve the strength of the pile end concrete and sediment mixture and the bearing capacity of the foundation pile.
本发明涉及一种用于灌注桩底沉渣处理的机械挤密及注浆施工方法，包括如下施工步骤：S1、将液压顶推注浆装置和高压注浆装置固定在钢筋笼底端，并将钢筋笼吊放入桩孔内的设计深度位置，S2、通过混凝土导管对桩孔进行灌注，形成钢筋混凝土灌注桩；S3、待灌注桩养护1～3天后，启动液压站将液压挤压装置内的压板沿灌注桩轴向向下顶推，将灌注桩底部混凝土与沉渣混合物强力压实挤密；S4、灌注桩底部混凝土桩段会产生横向裂隙空间，水泥浆在高压作用下通过注浆管路向裂隙空间及桩侧进行高压注浆直至达标为止；S5、待高压注浆数天后，灌注桩底混凝土与沉渣混合物可完成挤密与固化；本发明能提高桩端混凝土与沉渣混合物强度及基桩承载力。
Mechanical compaction and grouting construction method for cast-in-place pile bottom sediment treatment
一种用于灌注桩底沉渣处理的机械挤密及注浆施工方法
LIU ZHONG (author) / HE PENGPENG (author) / ZHANG CHUFU (author) / LYU MEIDONG (author)
2021-09-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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