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A platform for research: civil engineering, architecture and urbanism
Construction method of concrete expanded head compression-resistant pile
The invention provides a construction method of a concrete expanded head compression-resistant pile. The construction method comprises the following steps of: (1) movably pressing a steel sleeve on a pile end anchorage device, and then sinking the steel sleeve and the pile end anchorage device to a set depth, wherein the pile end anchorage device comprises an end plate, and a reinforcement cage is connected to the upper side of the end plate; (2) pouring fine aggregate concrete into the steel sleeve; (3) repeatedly lifting the steel sleeve upwards and inserting the steel sleeve downwards, enabling the fine aggregate concrete to flow out of the steel sleeve, and gradually diffusing the fine aggregate concrete outwards under the extrusion of the steel sleeve to form a concrete expanded head until the volume of the concrete expanded head reaches a set volume; (4) completing the pouring of the fine aggregate concrete; and (5) pulling out the steel sleeve, and completing the construction of a pile body. In the process of forming the expanded head, the fine aggregate concrete is diffused into a surrounding soil body under the extrusion of the steel sleeve, and the surrounding soil body is synchronously extruded outwards, so that the expanded head and the surrounding soil body form a whole, and the expanded head has higher anti-pulling bearing capacity.
本发明提出了一种混凝土扩大头抗压桩的施工方法，步骤为：(1)将钢套管活动地抵压在桩端锚具上，然后将钢套管和桩端锚具一起下沉到设定深度，该桩端锚具包括一端板，钢筋笼连接在该端板的上侧；(2)在钢套管内灌入细石混凝土；(3)反复将钢套管向上提升和向下插入，使细石混凝土向外流出钢套管，并在钢套管的挤压下、逐渐向外扩散形成混凝土扩大头，直到混凝土扩大头的体积达到设定的体积；(4)完成细石混凝土的浇注；(5)拔出钢套管，完成桩体的施工。在形成扩大头的过程中，细石混凝土在钢套管的挤压下，向周围的土体中扩散，并使周围的土体也同步向外挤压，使扩大头与周围的土体形成为一个整体，具有更高的抗拔承载力。
Construction method of concrete expanded head compression-resistant pile
The invention provides a construction method of a concrete expanded head compression-resistant pile. The construction method comprises the following steps of: (1) movably pressing a steel sleeve on a pile end anchorage device, and then sinking the steel sleeve and the pile end anchorage device to a set depth, wherein the pile end anchorage device comprises an end plate, and a reinforcement cage is connected to the upper side of the end plate; (2) pouring fine aggregate concrete into the steel sleeve; (3) repeatedly lifting the steel sleeve upwards and inserting the steel sleeve downwards, enabling the fine aggregate concrete to flow out of the steel sleeve, and gradually diffusing the fine aggregate concrete outwards under the extrusion of the steel sleeve to form a concrete expanded head until the volume of the concrete expanded head reaches a set volume; (4) completing the pouring of the fine aggregate concrete; and (5) pulling out the steel sleeve, and completing the construction of a pile body. In the process of forming the expanded head, the fine aggregate concrete is diffused into a surrounding soil body under the extrusion of the steel sleeve, and the surrounding soil body is synchronously extruded outwards, so that the expanded head and the surrounding soil body form a whole, and the expanded head has higher anti-pulling bearing capacity.
本发明提出了一种混凝土扩大头抗压桩的施工方法，步骤为：(1)将钢套管活动地抵压在桩端锚具上，然后将钢套管和桩端锚具一起下沉到设定深度，该桩端锚具包括一端板，钢筋笼连接在该端板的上侧；(2)在钢套管内灌入细石混凝土；(3)反复将钢套管向上提升和向下插入，使细石混凝土向外流出钢套管，并在钢套管的挤压下、逐渐向外扩散形成混凝土扩大头，直到混凝土扩大头的体积达到设定的体积；(4)完成细石混凝土的浇注；(5)拔出钢套管，完成桩体的施工。在形成扩大头的过程中，细石混凝土在钢套管的挤压下，向周围的土体中扩散，并使周围的土体也同步向外挤压，使扩大头与周围的土体形成为一个整体，具有更高的抗拔承载力。
Construction method of concrete expanded head compression-resistant pile
混凝土扩大头抗压桩的施工方法
LI RENMIN (author) / WANG JIANLAN (author) / GE LIRUI (author) / WANG TAO (author) / LIU XIAOBO (author) / LIU FEI (author)
2021-04-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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