CN102587541B - Composite mortar lightweight hollow wall structure with concealed beam and line-shaped expanded metal lath - Google Patents

Abstract

The invention relates to a light-weight hollow wall structure with an in-line expanded metal mesh composite mortar with concealed columns, which belongs to a new type of energy-saving, light-weight, heat-preserving composite hollow wall. Including steel trusses, steel mesh, composite mortar layer, polystyrene board, tie bars, hidden beams, hidden columns, the structural layer of the hollow wall is composed of the steel truss, steel mesh, and composite mortar layer, mainly used for enclosure Structure and load-bearing structure, the polystyrene board is installed between the steel truss and steel mesh, and the energy-saving layer is formed after the composite mortar is plastered, which mainly plays the role of heat preservation, heat insulation and sound insulation. The hidden beams and hidden columns are set In the hollow wall, it plays the role of adjusting its stiffness, improving its ductility and improving its seismic performance. The invention is a green, energy-saving, heat-insulating composite mortar hollow wall structure integrating light weight, high strength, good overall performance, good earthquake resistance, simple construction and other excellent performances.

Description

Lightweight hollow wall structure with one-shaped steel mesh composite mortar with hidden columns

technical field

The invention relates to a light-weight hollow wall structure with an in-line expanded metal mesh composite mortar with concealed columns, and belongs to a new type of energy-saving, light-weight, heat-preserving composite hollow wall.

Background technique

With the development of social production and the needs of people's lives, the demand for housing is increasing day by day. First, masonry structures are often used as load-bearing or enclosure structures. For this reason, the amount of masonry is also increasing rapidly. Clay bricks have been widely used as load-bearing or maintenance structures in buildings. Clay bricks have high production energy consumption, heavy wall body, poor seismic performance, large amount of masonry work, resulting in serious energy consumption and environmental pollution. At the same time, it is not in line with my country's sustainable development strategy. In order to implement the basic national policy of protecting farmland, saving energy and protecting the environment, the state prohibits the use of clay solid bricks, and advocates the use of green and energy-saving new wall materials. Second, in the residential system dominated by small high-rise buildings, frame shear walls or shear wall structures are often used. The traditional cast-in-place shear wall structure, the wall's self-weight, high rigidity, poor ductility, poor thermal insulation, etc. can no longer meet the new requirements of modern green and energy-saving buildings for wall materials.

Expanded mesh composite mortar lightweight hollow wall is a new type of wall structure with light weight, high strength, low energy consumption and good seismic performance. It has made bold innovations in wall materials and building structures. This new type of hollow wall structure is completely It is in line with the concept of green, low-carbon, energy-saving and emission-reducing development proposed in my country's "Twelfth Five-Year Plan" Outline (6). The hollow wall structure is filled with polystyrene board in the middle, which can reduce its own weight, reduce structural rigidity, increase structural ductility, and has good thermal insulation performance. It has the advantages of easy material acquisition, simple manufacture, and convenient construction; and it also has huge social and environmental benefits in terms of energy saving and emission reduction.

Contents of the invention

The purpose of the present invention is to provide a green, energy-saving and heat-retaining structure mainly used for enclosure structures or load-bearing structures, which integrates light weight, high strength, good overall performance, energy saving and heat insulation, good sound insulation, good seismic performance, and convenient construction. The heat-insulating composite mortar hollow wall, especially a light-weight hollow wall structure with one-shaped expanded metal mesh and composite mortar with hidden columns, can solve the new demand for wall materials in current green and energy-saving buildings.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A light-weight hollow wall structure with one-shaped steel mesh composite mortar with hidden columns, characterized in that it includes steel trusses, steel mesh, composite mortar layers, polystyrene boards, tie bars, hidden beams, and hidden columns; The net and the composite mortar layer are sequentially arranged on the outside of the steel truss, and the steel truss, expanded metal and composite mortar layer form the structural layer of the hollow wall, which is mainly used for the enclosure structure and load-bearing structure; the polystyrene board is installed on the steel truss, The energy-saving layer is formed between the expanded metal mesh, which mainly plays the role of heat preservation, heat insulation and sound insulation; the hollow wall structure is provided with hidden beams and hidden columns arranged horizontally and vertically at intervals, and the hidden columns are all in the shape of a word Type layout can adjust its stiffness, improve its ductility, and improve its seismic performance; tie bars are set at the joints of hollow wall structures.

Further, the hollow wall structure has a thickness of 120mm, a width of 1200mm, and a length of 2400mm.

Further, the steel truss is composed of vertical Φ4300 cold-drawn steel wire, horizontal Φ4300 cold-drawn steel wire and vertical S-shaped Φ4150 cold-drawn steel wire.

Further, the expanded metal mesh adopts a standard rhombic expanded metal mesh with a thickness of 0.4 mm to 0.8 mm and a mesh size of 8×16 mm, 10×20 mm or 20×25 mm.

Furthermore, the composite mortar layer is a high-performance composite mortar formed by mixing superfine admixtures such as ettringite-type expansion agent, silica fume, and fly ash, and fiber reinforcement materials, and its thickness is 35 mm to 40 mm.

Further, the thickness of the polystyrene board is 40mm-50mm.

Further, the tie bars are cold-drawn steel wires with a diameter of 4mm, and the spacing is 300mm.

Further, the cross-sectional size of the concealed beams is 50×120 mm to 80×120 mm, and the spacing is 400 to 600 mm.

Further, the cross-sectional size of the concealed columns is 50×120 mm to 80×120 mm, and the pitch is 600 to 900 mm.

The present invention has the following advantages:

1. Flexible use and strong adaptability. It has excellent properties such as light weight, high strength, good overall performance, energy saving and heat preservation, sound insulation, earthquake resistance, and simple construction. It can be used as non-load-bearing walls such as infill walls, interior partition walls, exterior walls and roof panels. It can also be used as a lightweight shear wall for load-bearing walls and frames in residential buildings.

2. Green and environmental protection. Filling insulation materials, such as expanded polystyrene, foamed polyurethane, expanded perlite, frog stone, etc.; also can use cheap insulation materials mainly based on waste materials, such as waste loose rock wool, mineral wool, foam plastic waste , Slag mixed with lightweight aggregate, etc. And it has the advantages of light weight, heat preservation, sound insulation and convenient construction.

3. Composite materials. The high-performance composite mortar used is a new type of composite material formed by adding ettringite-type expansion agent, silica fume, fly ash and other ultra-fine admixtures to ordinary mortar and fiber reinforced materials. High-performance composite mortar has the characteristics of good toughness, high elongation, and good bonding performance. High-performance composite mortar and steel mesh, two different materials, play different roles in the structure. The steel mesh mainly plays the role of reinforcement, and the composite mortar layer mainly plays the role of protection and anchorage. The two learn from each other and work together to improve the performance of the components.

4. Good fire resistance and high temperature resistance. High-performance composite mortar is not only a cementing material, but also a protective material, and no additional protective layer is required. Tests have shown that the strength of high-performance composite mortar will not decrease by more than 30% when the temperature reaches 600°C. The high-performance composite mortar can effectively protect the steel mesh under high temperature, so that it can continue to bear the load.

5. The construction is convenient and the price is low. The wall structure is divided into two parts: factory processing and construction site production. The steel wire mesh wall processed by the factory is transported to the construction site, and after splicing into the required house wall on site, the composite mortar of the specified label is applied to the surface to complete the production of the house load-bearing wall. It also has the advantages of low cost, convenient construction, easy promotion, and easy construction quality assurance.

The solution of the present invention will be further described in detail with the help of drawings and examples below.

Description of drawings

Fig. 1 is a schematic plan view of the present invention;

Fig. 2 is a schematic sectional view of the present invention;

Fig. 3 is a steel truss assembly axonometric view of the present invention;

Fig. 4 is the front schematic diagram of the present invention;

Explanation of reference signs

1. Steel truss, 2. Expanded metal mesh, 3. Composite mortar, 4. Polystyrene board, 5. Tendon bars, 6. Concealed beam, 7. Concealed column.

Detailed ways

As shown in Figures 1-4, a light-weight hollow wall structure with a one-shaped steel plate mesh composite mortar with hidden columns of the present invention mainly consists of steel trusses 1, steel mesh 2, composite mortar layers 3, polystyrene boards 4, Tie bars 5, concealed beams 6, and concealed columns 7 form an inline-shaped basic wall unit with a thickness of 120mm, a width of 1200mm, and a length of 2400mm. When splicing more than two inline-shaped basic wall units, use The tie bars are connected by 5, and the distance between them is 300mm. The steel mesh 2 and the composite mortar layer 3 are sequentially arranged on the outside of the steel truss 1 . The steel truss 1, expanded metal 2, and composite mortar layer 3 form the structural layer of the hollow wall, which is mainly used for enclosure structures and load-bearing structures. The polystyrene board 4 is installed between the steel truss 1 and the expanded metal 2. In between, the energy-saving layer is formed after the composite mortar plastering, which mainly plays the role of heat preservation, heat insulation and sound insulation. The hidden beam 6 and hidden column 7 are arranged in the hollow wall to adjust its stiffness, improve its ductility, and improve its earthquake resistance The role of performance. Wherein, the steel truss 1 is composed of vertical Φ4300 cold-drawn steel wire, horizontal Φ4300 cold-drawn steel wire, and vertical S-shaped Φ4150 cold-drawn steel wire. The expanded metal mesh 2 is a standard rhombic expanded metal mesh with a plate thickness of 0.4 mm and a mesh size of 8×16 mm. The composite mortar layer 3 is a high-performance composite mortar mixed with ettringite-type expansion agent, silica fume, fly ash and other ultra-fine admixtures and fiber reinforcement materials, and its thickness is 40mm. The thickness of the polystyrene board 4 is 40mm, and a gap with a width of 50mm is reserved at the place where the hidden beam and the hidden column are arranged. The cross-sectional size of the hidden beams 6 is 50×120mm, and the spacing is 600mm. The cross-sectional size of the concealed columns 7 is 50×120mm, and the spacing is 600mm.

The above is only one embodiment of the invention, and it can also be used in the reinforcement of other structural components. The basic unit of the in-line hollow wall can be mass-produced in the factory, and then transported to the construction site to splice the required structure, and the composite mortar plastering completes the construction. Any modifications, changes or equivalent structural changes made to the above embodiments according to the technical essence of the present invention shall belong to the protection scope of the technical solution of the present invention.

Claims (1)

1. A light-weight hollow wall structure with a one-shaped expanded metal mesh composite mortar with hidden columns, characterized in that it includes steel trusses (1), expanded metal mesh (2), composite mortar layer (3), polystyrene board (4) , tie bars (5), concealed beams (6), concealed columns (7); the steel mesh (2) and the composite mortar layer (3) are successively arranged on the outside of the steel truss (1), and the steel truss (1 ), expanded metal (2) and composite mortar layer (3) to form the structural layer of the hollow wall; the polystyrene board (4) is installed between the steel truss (1) and expanded metal (2) to form an energy-saving layer; The hollow wall structure is provided with concealed beams (6) and concealed columns (7) arranged horizontally and vertically at intervals, and the concealed columns (7) are arranged in a straight line; Rebar (5); the thickness of the hollow wall structure is 120mm, the width is 1200mm, and the length is 2400mm; the steel truss (1) is made of vertical Φ4300 cold-drawn steel wire, horizontal Φ4300 cold-drawn steel wire and vertical S-shaped Φ4150 cold-drawn steel wire welded; the steel mesh (2) adopts a standard diamond-shaped steel mesh with a thickness of 0.4mm to 0.8mm and a mesh size of 8×16mm, 10×20mm or 20×25mm; the composite mortar layer (3) It is a high-performance composite mortar formed by mixing ultrafine admixtures such as ettringite-type expansion agent, silica fume, and fly ash, and fiber reinforcement materials, and its thickness is 35 mm to 40 mm; the polystyrene board (4 ) has a thickness of 40mm to 50mm; the tie bars (5) are cold-drawn steel wires with a diameter of 4mm, and the spacing is 300mm; ~600mm; the cross-sectional size of the concealed column (7) is 50×120mm~80×120mm, and the spacing is 600~900mm.