Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for improving bearing capacity of concrete cast-in-situ bored pile
The invention relates to a construction method for improving the bearing capacity of a concrete cast-in-situ bored pile, which comprises the following steps: S1, while a reinforcement cage is processed, binding a pile side bag sealing and grouting device on the outer circumferential wall of the reinforcement cage, mounting a pile end material expansion device at the bottom end of the reinforcement cage, and after a pile hole is formed, putting the reinforcement cage into the pile hole; s2, a guide pipe is inserted into the pile hole for concrete pouring, and water infiltrated through the water permeable holes and the expansion blocks start hydration reaction to expand and compact the soil body at the pile end; s3, after the pile body is poured and formed, a high-pressure grouting pump conducts grouting on a grouting bag through a grouting pipe, and the grouting bag is supported and makes compaction contact with a soil body on the pile side; s4, after the pile is formed for several days, the solidified grout in the grouting bag, the expansion blocks expanded through hydration and the poured pile body form a whole; s5, the construction steps from S1 to S4 are repeated, and the next engineering pile is constructed; the method has the advantages that the implementation technology is simple and convenient, the quality is reliable, and the engineering cost can be remarkably reduced.
本发明涉及一种提高混凝土钻孔灌注桩承载力的施工方法，包括如下步骤：S1、在钢筋笼加工的同时，将桩侧囊袋封闭注浆装置捆绑在钢筋笼的外周向壁上，将桩端材料膨胀装置安装在钢筋笼的底端上，在桩孔形成后，将钢筋笼放入桩孔中；S2、在桩孔内插入导管进行混凝土的浇筑，通过透水孔渗进的水与膨胀块开始水化反应膨胀并对桩端土体挤密；S3、在桩体浇筑成型后，高压注浆泵通过注浆管对注浆袋进行注浆，注浆袋被撑起并与桩侧土体挤密接触；S4、在成桩若干天后，注浆袋中的固化浆液和经水化作用膨胀后的膨胀块与浇筑的桩体形成整体；S5、重复以上S1至S4施工步骤，施工下一根工程桩；本发明具有实施技术简单方便，质量可靠，可显著降低工程成本的优点。
Construction method for improving bearing capacity of concrete cast-in-situ bored pile
The invention relates to a construction method for improving the bearing capacity of a concrete cast-in-situ bored pile, which comprises the following steps: S1, while a reinforcement cage is processed, binding a pile side bag sealing and grouting device on the outer circumferential wall of the reinforcement cage, mounting a pile end material expansion device at the bottom end of the reinforcement cage, and after a pile hole is formed, putting the reinforcement cage into the pile hole; s2, a guide pipe is inserted into the pile hole for concrete pouring, and water infiltrated through the water permeable holes and the expansion blocks start hydration reaction to expand and compact the soil body at the pile end; s3, after the pile body is poured and formed, a high-pressure grouting pump conducts grouting on a grouting bag through a grouting pipe, and the grouting bag is supported and makes compaction contact with a soil body on the pile side; s4, after the pile is formed for several days, the solidified grout in the grouting bag, the expansion blocks expanded through hydration and the poured pile body form a whole; s5, the construction steps from S1 to S4 are repeated, and the next engineering pile is constructed; the method has the advantages that the implementation technology is simple and convenient, the quality is reliable, and the engineering cost can be remarkably reduced.
本发明涉及一种提高混凝土钻孔灌注桩承载力的施工方法，包括如下步骤：S1、在钢筋笼加工的同时，将桩侧囊袋封闭注浆装置捆绑在钢筋笼的外周向壁上，将桩端材料膨胀装置安装在钢筋笼的底端上，在桩孔形成后，将钢筋笼放入桩孔中；S2、在桩孔内插入导管进行混凝土的浇筑，通过透水孔渗进的水与膨胀块开始水化反应膨胀并对桩端土体挤密；S3、在桩体浇筑成型后，高压注浆泵通过注浆管对注浆袋进行注浆，注浆袋被撑起并与桩侧土体挤密接触；S4、在成桩若干天后，注浆袋中的固化浆液和经水化作用膨胀后的膨胀块与浇筑的桩体形成整体；S5、重复以上S1至S4施工步骤，施工下一根工程桩；本发明具有实施技术简单方便，质量可靠，可显著降低工程成本的优点。
Construction method for improving bearing capacity of concrete cast-in-situ bored pile
一种提高混凝土钻孔灌注桩承载力的施工方法
LIU ZHONG (Autor:in) / YANG NINGYE (Autor:in) / HUANG XIN (Autor:in) / LIU XIXU (Autor:in) / LIU XIAOKANG (Autor:in) / ZHANG CHUFU (Autor:in)
09.04.2024
Patent
Elektronische Ressource
Chinesisch
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