现在大多数灌注桩仍然设计为钢管，声测管可直接固定在钢筋笼内侧上，固定方式可采用焊接或绑扎，管子之间应基本上保持平行-若检测结果需对各测点混凝土的强度做出评估，则不平行度应控制在1‰以下。钢筋笼放入桩孔时应防止扭曲。
    管子一般随钢筋笼分段安装，每段之间的接头可采用反螺纹套筒接口或套管焊接方案，若采用波纹管则可利于大一号的波纹管套接，井在套接管的两端用胶布缠绕密封。无论那种接头方案都必须保证在较高的静水压力下不漏浆，接口内壁应保持平整，不应有焊渣、毛刺等凸出物，以免妨碍探头的自如移动，声测管的底部也应密封，安装完毕后应将上口用木塞堵住，以免浇灌混凝土时落人异物，致使孔道堵塞。

Acoustic detection tube bridge products: special specifications, material quality of steel pipe, steel, bridge parapet, pier guard board, etc., the product can perform to the standards of GB, JG, JT, can conform to ASTM, DIN, JIS, and many other domestic and international standard requirements.
1, acoustic detection tube pile foundation detection and embedment arrangement shall comply with the terms of JTG/T F81-01. 2, acoustic test tube into the site as the prominent, in the process of loading and unloading, handling, installation, to avoid tube body distortion of acoustic detecting tube, extrusion deformation. Acoustic test tube to be stored in a block rain venue facilities, avoid tube body to rust. In the installation of tube, the first thing to test for the tube, distorted sound tube is not allowed to enter setup. 3, sound tube can be directly fixed in the inside of the reinforcing steel bar cage and fixed point distance less than 2 meters, the sound at the bottom of the tube and the connector parts must set a fixed point, for the parts without reinforcing cage, acoustic detecting tube steel bracket. 4 acoustic detection pipe and steel reinforcement cage, the fixed way that preferred steel pipe clamp, card after acoustic detection pipe clamp, clamp with steel welding, acoustic detection tube and the protection of reinforcing cage binding method: put the wire winding two rounds in reinforcing cage, and then to braid hair method make up to 70 * 82 mm long, acoustic detection tube to fork out wire tied up, and then screw down the wire, (all the fixed point of the wire tie method by this method). Acoustic detection tube clamp pressure type (hydraulic), acoustic detection tube during the installation, first installation sealing ring; After being push up and down tube inserted in place, the special hydraulic tool die annular notch (or joint) on the socket end division of which a rubber ring is convex, the docking site pipe clamp in place at the same time. 5, reinforcing cage in the pile hole should be to prevent distortion, line pipe and GuanPing vertical, acoustic detecting tube with reinforcing cage panel, each section shall be buried to the measuring tube filling water, the sound be covered or urinating in a closed tube after the installation, in case when pouring concrete into foreign body, plug hole. 6, the buried depth of the acoustic measurement should be at the bottom of the pile above 50 mm to 150 mm, the sound with the top of the tube should be higher than that of pile top 300 mm - 500 mm, the same root pile of acoustic detection tube exposed the same height. 7, before the perfusion pile pouring concrete, check the sound level of the test tube, such as pipe water, should complement filling. 8, if the tube should be cut, should use cutting machine to cut off, and the nozzle grinding except the thorn, spot welding machine shall not be used to burn out. 9, when the welding steel, should avoid splash welding fluid flow on the acoustic measurement on the tube body and connector. Acoustic detection tube 10, when use, should be the proper oil steel tube inserted into the end, in order to guarantee the smooth joint insert