A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stiff composite pile body internal force testing method
The invention discloses a stiff composite pile body internal force testing method. The method comprises the following steps that S1, the length of an optical fiber patch cord is calculated, an optical fiber sensor is connected, and optical fiber strings suitable for all core piles are machined; s2, embedding optical fiber strings and leads into the corresponding core piles; s3, after construction of cement-soil mixing piles on the periphery of the stiff composite pile is completed, the core piles are concentrically implanted to the preset burial depth, and meanwhile connection of optical fiber strings between the core piles is completed; s4, collecting the strain of each test point under each stage of load in the loading and unloading test process of the stiff composite pile by using an optical fiber demodulator; and S5, according to the strain data of each measuring point, the distribution condition of the pile body axial force, the pile body side friction resistance and the pile body bending moment along with the depth and the change rule of the pile body bending moment along with the pile top load are determined, the survival rate of the optical fibers in the field testing process is improved, the process is organized and ordered, the steps are simple and reasonable, and the stiff composite pile body internal force testing can be efficiently and accurately completed.
本发明公开了一种劲性复合桩桩身内力测试方法，包括以下步骤：S1：计算光纤跳线长度并连接光纤传感器加工成各节芯桩适用的光纤串；S2：将光纤串及引线埋入对应的各节芯桩中；S3：完成劲性复合桩外围水泥土搅拌桩施工后，同心植入芯桩至预设埋深，同时完成各节芯桩间光纤串的连接；S4：利用光纤解调仪采集所述劲性复合桩在加卸载测试过程中每级荷载下各测点处的应变；S5：通过各测点处的应变数据，确定桩身轴力、桩身侧摩阻力、桩身弯矩随深度的分布情况及其随桩顶荷载的变化规律，提高了现场测试过程中光纤的存活率，过程条理有序，步骤简明合理，能够高效、准确地完成劲性复合桩桩身内力测试。
Stiff composite pile body internal force testing method
The invention discloses a stiff composite pile body internal force testing method. The method comprises the following steps that S1, the length of an optical fiber patch cord is calculated, an optical fiber sensor is connected, and optical fiber strings suitable for all core piles are machined; s2, embedding optical fiber strings and leads into the corresponding core piles; s3, after construction of cement-soil mixing piles on the periphery of the stiff composite pile is completed, the core piles are concentrically implanted to the preset burial depth, and meanwhile connection of optical fiber strings between the core piles is completed; s4, collecting the strain of each test point under each stage of load in the loading and unloading test process of the stiff composite pile by using an optical fiber demodulator; and S5, according to the strain data of each measuring point, the distribution condition of the pile body axial force, the pile body side friction resistance and the pile body bending moment along with the depth and the change rule of the pile body bending moment along with the pile top load are determined, the survival rate of the optical fibers in the field testing process is improved, the process is organized and ordered, the steps are simple and reasonable, and the stiff composite pile body internal force testing can be efficiently and accurately completed.
本发明公开了一种劲性复合桩桩身内力测试方法，包括以下步骤：S1：计算光纤跳线长度并连接光纤传感器加工成各节芯桩适用的光纤串；S2：将光纤串及引线埋入对应的各节芯桩中；S3：完成劲性复合桩外围水泥土搅拌桩施工后，同心植入芯桩至预设埋深，同时完成各节芯桩间光纤串的连接；S4：利用光纤解调仪采集所述劲性复合桩在加卸载测试过程中每级荷载下各测点处的应变；S5：通过各测点处的应变数据，确定桩身轴力、桩身侧摩阻力、桩身弯矩随深度的分布情况及其随桩顶荷载的变化规律，提高了现场测试过程中光纤的存活率，过程条理有序，步骤简明合理，能够高效、准确地完成劲性复合桩桩身内力测试。
Stiff composite pile body internal force testing method
一种劲性复合桩桩身内力测试方法
SU GANG (author) / CHEN XINSHENG (author) / DAI GUOLIANG (author) / DENG YAGUANG (author) / HUANG JIANHUI (author) / ZHOU PENG (author) / QIAO YAOFEI (author)
2024-10-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Testing device and method for pile forming loading model of stiff composite pile
| European Patent Office | 2020