Items to be noted when using anchor bolts during construction

According to the elevation of the floor, it is checked whether the direction and height of the connected steel bending section meet the design requirements, and the female straight threaded sleeve is adjusted with the wrench in the forward and reverse directions to ensure that the design requirements are met. The sleeve of the raw material entering the field shall have a product certificate, and the surface shall be inspected for cracks, crusting, rust spots and other defects affecting performance. It shall also have a test report sampled according to the specifications.

In the process of cutting, threading and secondary bending, the visual inspection should be strictly carried out. Strictly control the quality of the process of self-inspection, handover inspection and full-time quality inspection. For each batch of steel bars, a random sample of 3 sets of 3 joints of the same grade and the same specification shall be sent to the laboratory for single-piece tensile test. If the tensile strength reaches the A-level joint, the batch of processed steel bars is qualified for acceptance. On-site installation of the quality inspection of the steel connection in each construction section, in addition to the random sampling inspection using the torque wrench at the site, it is also necessary to randomly pump a set of 3 pieces of gas welding with various specifications of the steel joints, and send the test room to the single piece tensile strength. test. For those who fail to meet the Class A standard, it is necessary to re-synthesize 2 groups of 6 pieces for testing. If there is still one piece that does not meet the Class A joint standard, it is determined that the steel bar connection of the construction section is unqualified.

Features of two-way adjustable taper threaded sleeve connection technology:

(1) It consists of a taper threaded sleeve and a straight threaded sleeve, and has the advantages of taper thread and straight threaded sleeve connection.

(2) Machines that can make full use of the original taper thread processing, without adding mechanical equipment, are economical and reasonable.

(3) No special tools are needed during the installation process. The taper thread torque wrench can be used directly to tighten the sleeve and connect the steel bars.

(4) No special training personnel are required, only general technical guidance is needed to maintain the continuity of the construction process and the project quality is stable.

(5) Since the straight sleeve is connected between the sub-sleeve and the female sleeve, the connection of the steel bars has a fine adjustment effect on the length and direction, and does not affect the strength of the joint.

Through the use of high-tech technologies such as network technology and information integration, the housing project is precisely designed, carefully constructed and optimized to improve the high residential, new technology and living environment quality. In order to improve the overall quality level of residential projects, the Quanzhou Municipal Construction Committee has formulated regulations for the uniform setting of air-conditioner positions in all residential projects in the city. It is required that all residential buildings in this city must have a uniform design for the location of each residential air-conditioning unit. Special instructions shall be made for the contents of the setup, and the construction unit must implement it according to the design drawings. For projects that have not yet started construction, the design of the air conditioner position is not considered in the design. The development unit must first modify the design and then construct. Property units must do a good job in management.

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