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长沙桩基声测管哪里有现货，声测管常规50-54-57，要求采用外径50-60mm的钢管，壁厚3.5mm左右，施工中焊接法。Changsha pile foundation acoustic pipe is available in stock. The acoustic pipe is usually 50-54-57. It is required to use a steel pipe with an outer diameter of 50-60mm and a wall thickness of about 3.5mm. The welding method is used during construction.这种方法在施工中所需成本高，操作复杂，给现场施工带来不便，施工成本只占普通焊管成本1/3左右。高强度双环液压声测管大大提高了工作效率，降低了施工成本。首要要对管体进行查验，歪曲变形的声测管不允许进入装置程序。螺旋式声测管自进入工地现场后起，在装卸、转移、装置过程中，要防止使螺旋式声测管的管体歪曲、揉捏变形。螺旋式声测管要寄存在有遮雨设备的场所，防止管体生锈。
This method requires high cost and complicated operation in construction, which brings inconvenience to site construction. The construction cost only accounts for about 1/3 of the cost of ordinary welded pipe. The high-strength double ring hydraulic acoustic pipe greatly improves the working efficiency and reduces the construction cost. First of all, the pipe body shall be inspected. Distorted acoustic pipes are not allowed to enter the device program. Since the spiral acoustic pipe enters the construction site, the pipe body of the spiral acoustic pipe shall be prevented from being distorted, kneaded and deformed during loading, unloading, transfer and installation. The spiral acoustic pipe shall be stored in the place with rain proof equipment to prevent the pipe body from rusting.
钳压式声测管作用：
1、连接可靠安全 钳压式连接强度高，抗振性好。将连接部位一次性做"死"，避免了"活接头"松动的可能性。2、接头"凸节"小 凸节处5mm，且呈圆弧连接，有效避免与导管相碰撞，减少混凝土流阻。
3、施工便利快捷 避免现场焊接、套丝或滚槽作业，只要采用专用的液压工具，钳压连接即可轻松完成，省时、省力、省费用，而且一次安装成功。
采用声波透射法。它将超声发射探头和接收探头分别下进预先埋入桩身且充满水的声测管中，探头产生的超声波经过水耦合穿透桩身混凝土到达另一个声测管中的接收探头，接收探头将接收到的信息传入仪器，通过综合分析接收到的超声波在混凝土中的信声测管：如声速、声幅、频率和波形诸参量的特征，而对桩身混凝土质量做出评价。
Function of clamp type acoustic tube:
1. Reliable connection. The safety gear has high pressure connection strength and good vibration resistance. The connection part is "dead" at one time to avoid the possibility of "loose joint".
2. The small convex joint of the joint "convex joint" is 5mm and is connected in an arc, which effectively avoids collision with the conduit and reduces the concrete flow resistance.
3. The construction is convenient and fast, avoiding on-site welding, threading or groove rolling. As long as special hydraulic tools are used, the clamping connection can be easily completed, saving time, labor and cost, and the installation is successful at one time.
Sound wave transmission method is adopted. The ultrasonic transmitting probe and receiving probe are respectively lowered into the acoustic tube pre embedded in the pile body and filled with water. The ultrasonic wave generated by the probe penetrates the concrete of the pile body through water coupling and reaches the receiving probe in another acoustic tube. The receiving probe transmits the received information to the instrument. Through comprehensive analysis of the characteristics of the received ultrasonic signal acoustic tube in the concrete, such as sound velocity, sound amplitude, frequency and waveform, The concrete quality of pile shaft is evaluated.