本文设计的课题是环湖北路下穿隧道模板支架专项施工方案，该施工方案根据箱

The subject of this paper is a special construction plan for the formwork support of the tunnel under Huanhubei Road. According to the box girder structure size and load size, the construction plan preliminarily designs the structure diagram of the full-floor support, checks the bearing capacity and deflection of the template support, and then compiles the full-floor support The construction schedule plan, according to the schedule, prepares a resource demand plan for manpower, materials, and machinery, and then introduces in detail the main construction methods such as bracket erection, preloading, and dismantling, and finally prepares the bracket construction quality, safety, civilization assurance measures and emergency plans, etc., at the same time , According to the various requirements of the task book, write a formwork support plan that is economical and practical, and can meet the requirements of safe construction. <br>The cross-section size of the tunnel under Huanhubei Road is 1200mm, and the clearance size is 1000mm. The tunnel structure adopts reinforced concrete structure, and the concrete number is C40P8 waterproof concrete. The layout adopts a full-floor bracket, and uses related formulas for checking calculations to check the strength, stress, and deflection of the bearing capacity of the bracket in the ultimate state, so that the final check result meets the requirements of the specification.

The subject of this paper is the special construction plan of tunnel template support under Hubei Road, the construction plan according to the structure size of the box beam, load size, the preliminary design of the full-hall bracket structure map, the template bracket carrying capacity and deflection calculation, and then prepare the construction schedule of the full-hall bracket, according to the schedule of the preparation of people, materials, machine resources demand plan, and then detailed introduction of the bracket set-up, pre-pressure, demolition and other major construction methods, and finally to prepare the construction quality of the bracket. According to the various requirements of the task book, a template bracket scheme is written that is both economical and practical and can meet the requirements of safe construction.<br>The cross-sectional dimensions of the tunnel under the ring Road are 1200mm, the net space size is 1000mm, the tunnel structure is reinforced concrete structure, the concrete is labeled C40P8 waterproof concrete, the steel diameter φ

The subject of this paper is the special construction scheme of the formwork support for the tunnel under Huanhu North Road. According to the structural size and load of the box girder, this construction scheme preliminarily designs the structural drawing of the full support, checks the bearing capacity and deflection of the formwork support, and then compiles the construction progress plan of the full support. According to the schedule, it compiles the demand plan of human, material and machine resources, and then introduces the support in detail At the same time, according to the various requirements of the task book, we write out the formwork support scheme which is not only economical and practical, but also can meet the requirements of safe construction.<br>The section size of Huanhu North Road Underpass tunnel is 1200mm, and the clearance size is 1000mm. The tunnel structure is reinforced concrete structure, and the concrete grade is c40p8 waterproof concrete. Hpb300 steel bar is used when the diameter of steel bar is less than 12mm, and HRB400 steel bar is used when the diameter of steel bar is greater than 12mm. The layout form of the tunnel box girder support is full support, and the relevant formula is used for checking calculation The strength checking, stress checking and deflection checking of the bearing capacity in the limited state make the final checking results meet the requirements of the specification.