A bolt-connected assembleable anti-crack and anti-seepage permanent beam formwork

Abstract

The invention discloses a bolted dismountable anti-cracking impermeable permanent beam form. A left corner face plate and a right corner face plate are connected through bolts. The bolted dismountable anti-cracking impermeable permanent beam form is applied to the beam casting phase of industrial and domestic building structures, hydraulic structures, port and marine structures and the like. The bolted dismountable anti-cracking impermeable permanent beam form also serves as a protective plate and an outer protection layer to bear partial load for the structures after being cast and formed. The left corner face plate and the right corner face plate can be made from different types of materials, namely UHTCC (ultra-high toughness cementitious composites), nonmetallic fiber mesh and short fiber reinforced cementitious composites, wire mesh and short fiber reinforced cementitious composites and the like. The bolted dismountable anti-cracking impermeable permanent beam form has the advantages of simplicity in manufacture, convenience in use, high durability, and control of crack development.

Description

technical field [0001] The invention belongs to a building formwork, specifically a high-durability permanent formwork mainly used for beams in industrial and civil building structures, hydraulic structures, and harbor and sea structures. It is used as a formwork in the pouring stage. After forming, it also serves as the protective plate and outer protective layer of the structure, and bears part of the structural load at the same time. Background technique [0002] At present, in the field of domestic construction, the beams of industrial and civil building structures, hydraulic structures, and harbor and sea structures usually use wooden formwork, steel formwork and other formwork, which has large consumption, inconvenient disassembly and assembly, high turnover cost, and low utilization rate. and other unfavorable factors. Durability has always been one of the main problems faced by reinforced concrete structures. In the traditional structure, the surface of ordinary co...

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Problems solved by technology

In the traditional structure, the surface of ordinary concrete is naturally exposed, and its durability is low. At present, about 50% of the houses in my country have entered the aging stage, that is, 2.34 billion square meters of buildings are facing durability problems.

In addition, designing with crack resistance as the control condition is an important feature that distinguishes hydraulic structures, port and sea structures, etc. from other types of building structures. The problem of easy cracking of ordinary concrete will not only affect the normal work of hydraulic structures, but also affect their durability. performance and service life, and even affect the safe operation of the structure

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