Support-free permanent composite heat-preservation outer formwork and steel-wood combined inner formwork system and construction method thereof

Abstract

The invention discloses a support-free permanent composite heat-preservation outer formwork and steel-wood combined inner formwork system and a construction method thereof. The support-free permanent composite heat-preservation outer formwork and steel-wood combined inner formwork system is characterized in that a permanent composite heat-preservation outer formwork is a disassembly-free composite heat-preservation formwork formed by integrally compounding fiber reinforced microporous concrete, an extruded polystyrene board, glass fiber gridding cloth and other materials in a gapless mode, has good fire resistance and durability and has the same service life as a main body structure; an inner formwork is a steel-wood combined inner formwork and is formed by prefabricating and combining square pipes and bamboo plywood; a support-free permanent composite heat-preservation formwork multifunctional connecting piece, an inner side square pipe main edge, a positioning pin rod and a pin piece are used in a matched mode to replace wall penetrating bolts, wood square secondary edges, steel pipe main edges and other supporting systems, wall outer formwork support-free assembly can be rapidly conducted; and the construction is easy and efficient, the construction period is effectively shortened, the inner formwork can be repeatedly used, the comprehensive cost is effectively reduced. The support-free permanent composite heat-preservation outer formwork and steel-wood combined inner formwork system has the advantages that formwork factory prefabrication and on-site assembly type construction are achieved, the construction speed is high, and the structure is safe and reliable, and the problems that an existing traditional wall formwork supporting system is tedious, low in construction efficiency and the like are solved.

Description

technical field [0001] The invention belongs to the system of support-free permanent composite thermal insulation outer formwork and steel-wood combination inner formwork system used in the prefabricated building energy-saving and structurally integrated building wall. , thermal insulation and fire prevention, and the same service life as the main body of the structure. The construction of the inner formwork is simple and convenient, improves the efficacy, and shortens the construction period. It can effectively solve the problems of cumbersome installation of the current wall formwork, slow construction speed, and low resource utilization. Background technique [0002] With the continuous promotion and active guidance of various national policies, the energy-saving and structural integration system of prefabricated buildings has become an inevitable trend of development. Its construction speed is fast, green and environmentally friendly, durable and fire-resistant, and it sa...

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Problems solved by technology

[0003] Based on the above, the purpose of the present invention is to provide a support-free permanent composite thermal insulation external formwork and steel-wood composite internal formwork system and its construction method, which adopts thermal insulation and structural integration external formwork technology and steel-wood composite internal formwork technology To solve the fire prevention and durability problems existing in the current building thin plaster exterior wall thermal insulation system, to solve the problems of complicated construction, low efficiency and insufficient resource utilization in the current thermal insulation and structural integrated wall construction support system

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