We believe that the above-mentioned steel mesh fine stone concrete self-mold is feasible. The reason is: (1) one end is large, one end is small, the big end is facing downward, the surface is rough, and it can be well combined with the post-cast concrete. There is no separation between the self-mold and the post-cast concrete, and the equipment is pulled out during operation. (2) The concrete strength is improved by one grade, and the skeleton is a long wire wire mesh, which enhances the strength and rigidity of the self-mold. (3) Installation and fixing are also simple and convenient.
However, the construction unit did not agree with this plan, and required the installation of the template and the mold as usual, so they had to re-consider from the template. According to the analysis and summary of the reasons for the previous hole bolt reserved hole template (reserved mode), after repeated efforts to modify the scheme and operation method, another set of practical solutions was finally formulated.
Scheme 2: Wood formwork (1) Template making: 1 template uses 2cm thick fir board, planed light. 2 The reserved hole template upper mouth is 2.5cm larger than each side of the lower mouth. 3 Use 3cm × 5cm eucalyptus, nailed a template with nails every 50cm to increase the rigidity of the template.
After the template is made, brush the waste engine oil and wash it with talcum powder. (2) The lifting scheme absorbs the lessons of the previous reserved hole template, and it is easy to pull and pull the wooden template itself. Install a 2mm thick steel plate at the bottom of the template, and pull the steel plate to lift the template together. Out. Lifting steel plates are made.
Finally, it is considered how to tie the hook of the lifting hoist to the lifting ring of the steel plate. The designer has processed the steel bars of the two ends of the one end hook and welded at the other end according to the deepest reserved hole depth dimension. Can be hooked.
(3) Construction process 1 Fixed hole template fixing In order to ensure the accuracy of the reserved hole position and the convenience of removing the fixture, a fixing method such as the one is adopted. The deep reserved hole template is fixed by three steel pipe clamps. For the convenience of construction, the short steel pipe is used for the vertical steel pipe. After the concrete is poured to the reserved hole mold position, the corresponding steel pipe hoop is removed without shifting the reserved hole template. 2 The hoisting of the foundation concrete of the pouring equipment and the reserved hole template of the hoisting reserved hole mold runs through the pouring process of the concrete of the whole equipment foundation. After the concrete foundation of the equipment foundation is poured, the elastic holes of the anchor bolts of the equipment foundation are reviewed. The axial displacements are within the allowable deviation of the specification, and all the templates of the reserved holes are pulled out. It avoids the occurrence of the waste template phenomenon that was sent to dig in the reserved hole after the concrete foundation of the equipment was poured.
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