If bolts are used separately, if the bolts are used alone, the design requirements must not meet the design requirements. If the steel reinforcement is used, if the steel reinforcement is used, not only the bolts will be caused during the welding process. Displacement, during the concrete pouring process, the overall displacement of the steel frame will also cause the overall displacement of the steel frame. It is difficult to ensure that the bolt is pre-buried and it is difficult to ensure the quality of the bolt. It may also cause quality accidents. Cause a quality accident. After several arguments, after several arguments, the finalization of the construction plan is as follows: The construction plan is as follows: the excavation of the foundation earthwork excavation foundation earthwork, the frame independent foundation and the frame column construction firstly the frame independent foundation and frame column construction Partially back part of the backfill earthfill, then pour the foundation of the equipment and then pour the foundation of the equipment, add the retarder to the foundation concrete with the retarder equipment, and implement the two-shift system to implement the two-shift system Day and night construction. In order to reduce hydration heat to reduce hydration heat, slag Portland cement is used to use slag Portland cement. Once the concrete equipment foundation is applied once, the equipment foundation construction is carried out, that is, the height of the bolt bottom is pre-embedded under the bolt bottom level. Where. In order to ensure the firmness of the construction joints to ensure the firmness of the construction joints, the two-way arrangement of the two-way arrangement of the steel bars is set, embedded in the concrete and buried in the concrete, and the upper part is left with iron parts.
The thick steel plate is welded into the steel bracket platform and the thick steel plate is welded into the steel support platform. The lower and the embedded iron parts are welded and the pre-embedded iron parts are welded firmly, so that the top of the steel support platform is so high that the top level of the steel support platform is the bottom of the equipment. The elevation is the bottom elevation of the device. Then the main body is constructed and then the main body is constructed. The net frame is installed in the safety net frame, and the crane is installed in place to install the crane in place. Use the crane to lift the equipment from the crane and sit on the steel bracket platform directly on the steel bracket platform. Use the instrument (theodolite theodolite, level gauge) to center, level, and find the right And insert the pre-embedded bolt directly into the base bolt hole of the equipment and directly insert the pre-embedded bolt into the bolt hole of the equipment. To increase the bolt anchoring, increase the bolt anchoring, and weld the bolt and the bracket to the bracket and the bracket. , and it is leveling again and again. The template of the pre-embedded bolt part of the supporting equipment is high in the form of the bolt part of the pre-embedded bolt. It can only be reinforced on the pre-embedded iron piece and can only be reinforced on the pre-embedded iron piece. On the bracket, to avoid the displacement of the bracket to avoid the displacement of the bracket. In the concrete, the retarder should be mixed with the retarder, and the layered casting should be layered and poured. Due to the addition of the retarding type and the addition of the retarding and water reducing agent, it is Continuous pouring and continuous casting, so no construction joints are left without construction joints. It is required to vibrate and compact to ensure the vibrating and compacting, to ensure that the concrete is dense and to ensure the solidity of the concrete, and no honeycomb surface phenomenon shall occur. After the concrete meets the requirements, the template is removed after the concrete meets the requirements. Finally, the equipment is checked and the equipment is finally checked, and the equipment is finally placed in place to finally put the equipment in place. Practice has proved that it is feasible to adopt a direct burying scheme for the pre-embedded bolts of the equipment. It is feasible to adopt a direct burying scheme for the pre-embedded bolts of the equipment foundation. It is a new technology in the installation of large-scale equipment foundation concrete construction foundation concrete construction and equipment installation, which is worthy of further promotion and application.
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