摘要：【中文】本发明公开了一种玄武岩纤维智能锚杆检测系统，包括锚杆，锚杆外部嵌套有锚杆接触环，锚杆内部设有金属刻丝，所述金属刻丝的一端与锚杆接触环连接，另一端与失稳预警系统连接；所述锚杆外部设有锚环，锚环内侧与锚杆接触环相对应的位置设有锚环接触环，所述的锚环接触环与失稳预警系统连接，所述的锚杆内部设有光栅，所述的光栅与光栅检测系统连接。本发明能够降低锚杆运营阶段维护难度，提高运营阶段锚杆检测效率；采用布拉格光栅替代应变片，用以检测锚杆系统的应力状态，相较于应变片，光栅寿命较长，可以在锚杆运营阶段通过预留端口，进行长期监测；本发明的锚杆和锚环均采用玄武岩纤维制成，能够很好地与光栅及金属刻丝编织，且具有绝缘性。 【EN】The invention discloses a basalt fiber intelligent anchor rod detection system which comprises an anchor rod, wherein an anchor rod contact ring is nested outside the anchor rod, metal cutting wires are arranged inside the anchor rod, one end of each metal cutting wire is connected with the anchor rod contact ring, and the other end of each metal cutting wire is connected with a instability early warning system; the anchor rod outside is equipped with the anchor ring, and the anchor ring inboard is equipped with anchor ring contact ring with the corresponding position of anchor rod contact ring, anchor ring contact ring be connected with unstability early warning system, the anchor rod inside be equipped with the grating, grating and grating detecting system be connected. The anchor rod detection method can reduce the maintenance difficulty of the anchor rod in the operation stage and improve the anchor rod detection efficiency in the operation stage; the Bragg grating is adopted to replace a strain gauge for detecting the stress state of the anchor rod system, compared with the strain gauge, the service life of the Bragg grating is longer, and long-term monitoring can be carried out through a reserved port in the anchor rod operation stage; the anchor rod and the anchor ring are both made of basalt fibers, can be well woven with gratings and metal carved wires, and have insulativity.

摘要：【中文】本发明涉及桩基础技术领域，公开了便于下放的后置式砼桩头断裂方法，包括以下步骤，A.钢筋笼(1)设计标高上端的钢筋和检测管套装包裹层(11)；B.砼浇筑结束后，凝固前，下放断裂装置(2)，将金属盖(22)下放到预断面(3)；C.砼凝固达到初期强度后(一般10兆帕以上)，向第一千斤顶(25)加压，使金属盖(22)所在层的砼断裂；D.待基坑开挖后再次启动第一千斤顶(25)，吊离金属盖(22)上侧的砼；E.接着启动第二千斤顶(26)，使断裂装置(2)脱离桩基础砼。第一千斤顶首先对预断面产生压力，使砼断裂。接着第一千斤顶对金属盖产生向上的压力，便于已断裂砼的吊离；简化了工人撬开预断面上侧砼的施工难度，节约了工况时间。 【EN】The invention relates to the technical field of pile foundations, and discloses a rear concrete pile head fracture method convenient to lower, which comprises the following steps that A, a wrapping layer (11) is sleeved on a steel bar and a detection pipe at the upper end of a designed elevation of a steel bar cage (1); B. after concrete pouring is finished and before solidification, the breaking device (2) is put down, and the metal cover (22) is put down to the pre-fracture surface (3); C. after the concrete is solidified to reach the initial strength (generally over 10 MPa), pressurizing the first jack (25) to break the concrete of the layer where the metal cover (22) is positioned; D. after the foundation pit is excavated, starting the first jack (25) again, and hoisting the concrete on the upper side of the metal cover (22); E. and then the second jack (26) is started to separate the breaking device (2) from the pile foundation concrete. The first jack firstly generates pressure on the pre-section to break the concrete. Then the first jack generates upward pressure on the metal cover, so that the broken concrete can be conveniently lifted off; the construction difficulty of prying the concrete on the upper side of the pre-fracture surface by workers is simplified, and the working condition time is saved.