Anchor bolts are used to fix the link. We will meet some problems, such as the center bolt deviation, the height of the anchor bolt and the anchor bolt loosen.How to deal with these problems?

       1. The central deviation.
       If bolt diameter is less than 30mm, the center deviation in (10 ~ 30) mm or less, use oxygen acetylene flame to make bolt burn red. Then use sledge hammer to bend. With the help of welding steel plate to reinforcement. So that when the bolt tightened won't recover to the original position. Bolt diameter greater than 30mm, larger deviation, the bolt can be cut, with a steel plate welded in the middle of the bolt. If the bolt strength is not enough, both sides of the bolt can be helped with welded two steel plate for reinforcement. The length of the reinforcement plate should be 3 to 4 times than bolt diameter.
       2. The height of the anchor bolt failure.
      (1) When the anchor bolt is too high, the upper part can be cut away to re-threading.
      (2) The bolt is low and the difference is less than 15mm, you can use oxygen acetylene flame to make the bolt burn red, and then stretched. Elongated method is in the mound of the two panels to erect a hole in the middle of the steel plate and set on the anchor bolts,the top with non-standard nuts and torque tighten, with the power to make red-hot bolt part extension. The bolt off Low and the difference of more than 15mm, you can dig a pit around it, at about 100mm away from the pit at the end of the bolt cut off, and the other welding a new car with the same diameter non-standard bolts, and reinforced with two iron bars. The length of the iron rod is about 4 to 5 times than bolt diameter.
      3.The anchor bolts in the foundational loosen.
      Bolt loosening, should first bolt back to the original position.The foundation of the hole shovel into the shape of middle large, two small shape. Then welded in the bolt vertical and horizontal bar two rounds with water washed and grouting. After solidification,tighten the bolts.