阅读说明：本技术 一种少支撑钢丝网增强微孔混凝土免拆底模板及其施工方法 (Few-support steel wire mesh reinforced microporous concrete disassembly-free bottom formwork and construction method thereof ) 是由 王洪镇 曹万智 马得俊 马亮亮 田彦智 马寿 苏明明 杨永恒 甘季中 于 2021-08-31 设计创作，主要内容包括：本发明公开一种少支撑钢丝网增强微孔混凝土免拆底模板及其施工方法。板是由高强度轻质微孔混凝土、φ4@100钢筋网片、耐碱玻纤网格布组成；其在浇筑混凝土楼板时当做底模板使用,由于其良好的力学性能,通过少量的支撑件就可达到支模要求,再通过搭配钢芯塑料连接件和卡板勾筋连接件,与楼板钢筋进行绑扎连接,即可形成少支撑钢丝网增强微孔混凝土免拆底模板支撑系统。本发明具有轻质高强,保温防火、隔音抗渗、经济美观的特点,可代替现行现浇楼板用竹胶合板和钢模板,进行快速施工,提高施工效率,降低施工成本,解决现行现浇楼板需二次保温和支模存在的支撑件过多、工序繁多、拆除效率低下等工程问题。(The invention discloses a disassembly-free bottom formwork for reinforced microporous concrete with few supporting steel wire meshes and a construction method thereof. The board is composed of high-strength light microporous concrete, phi 4@100 reinforcing mesh sheets and alkali-resistant glass fiber mesh fabrics; the steel core plastic connecting piece and the clamping plate are matched to be hooked with the rib connecting piece and then bound and connected with floor reinforcing steel bars, and therefore the dismounting-free bottom formwork supporting system for the reinforced microporous concrete with the few supporting steel wire meshes can be formed. The invention has the characteristics of light weight, high strength, heat preservation, fire prevention, sound insulation, impermeability, economy and beauty, can replace the existing bamboo plywood and steel formwork for cast-in-place floor slabs for rapid construction, improves the construction efficiency, reduces the construction cost, and solves the engineering problems of excessive supporting pieces, multiple working procedures, low dismantling efficiency and the like of the existing cast-in-place floor slabs which need secondary heat preservation and formwork support.)

1. A little supporting wire net reinforced micropore concrete bottom template (1) without dismantling for cast-in-place concrete floor is formed by gapless compounding micropore lightweight concrete (2), phi [email protected] reinforcing steel mesh sheets (3) and alkali-resistant glass fiber mesh cloth (4); the reinforced concrete floor slab is characterized in that glass fiber mesh cloth (4) and phi [email protected] reinforcing steel mesh sheets (3) are compounded together by pouring high-strength lightweight aggregate cellular concrete (2) to form a steel wire mesh and glass fiber mesh cloth dual-reinforced cellular concrete structure, a few-support steel wire mesh reinforced cellular concrete disassembly-free bottom template (1) for a cast-in-place concrete floor slab is used as a permanent disassembly-free bottom template with a heat insulation function of the cast-in-place concrete floor slab, and the ratio of the length L to the width B of the slab is 2: 1, the thickness is 5 cm-8 cm.

2. The construction method of the cast-in-place concrete floor slab reinforced microporous concrete dismantling-free bottom formwork with the few supporting steel wire meshes as claimed in claim 1, comprising the steps of: the method comprises the steps that firstly, a disassembly-free bottom formwork (1) is prefabricated according to the design size requirement and used as a permanent bottom formwork of a cast-in-place floor slab of a building, the requirement of a supporting interval is determined according to the span of the disassembly-free bottom formwork (1) during construction, supporting pieces (11) of the disassembly-free bottom formwork of the cast-in-place floor slab are arranged according to the requirement, and the interval of the supporting pieces (11) is not more than 1000 mm; uniformly drilling holes (5) on the disassembly-free bottom template (1), wherein the hole diameter is consistent with the diameter of a steel core plastic connecting piece (9) rod body, inserting the steel core plastic connecting piece (9) from the bottom, and placing not less than 3 steel core plastic connecting pieces (9) on the disassembly-free bottom template (1) per square meter; then the disassembly-free bottom template (1) is placed on the supporting piece (11) and is level with the wall inner template (7) at the lap joint of the wall; inserting steel core plastic connecting pieces (9) into other bottom formworks according to the same method, placing the steel core plastic connecting pieces on supporting pieces (11), placing clamping plate rib-hooking connecting pieces (10) between the seams of the adjacent disassembly-free bottom formworks (1), wherein the distance between the clamping plate rib-hooking connecting pieces (10) and the disassembly-free bottom formworks (1) is not more than 500 mm; and then paving and binding phi [email protected] steel bar mesh sheets (8) to be bound and connected with wall steel bars (6), then binding the steel core plastic connecting piece (9), the clamping plate rib hooking connecting piece (10) and the floor phi [email protected] steel bar mesh sheets (8) together by using binding wires, anchoring the clamping plate rib hooking connecting piece (10), the steel core plastic connecting piece (9) and the phi [email protected] steel bar mesh sheets (8) into the floor concrete (12) by pouring the floor concrete (12), only dismantling the arranged supporting piece (11) after the floor concrete (12) is cured to meet the strength requirement, avoiding dismantling the bottom template (1), realizing integration with the floor concrete as a heat-insulating layer, and meeting the same service life requirement of the heat-insulating layer and the structure.

Technical Field

The invention belongs to a few-support steel wire mesh reinforced microporous concrete disassembly-free bottom template for cast-in-place concrete floor construction, which is prefabricated in a factory, is subjected to few-support formwork support in a field, has the properties of light weight, high strength, heat preservation, fire resistance, impermeability and moisture resistance, can have the same service life as a main structure body, and meets the requirements of building energy-saving design and concrete permanent bottom template use.

Background

With the rapid development of the fabricated building in China, the shortage of labor force and the increase of construction cost, the realization of the fabricated rapid construction is the most effective solution at present. What present the overwhelming majority construct cast in situ concrete floor die block board and use is bamboo plywood and steel form, need a large amount of support piece when the construction, the die block board still need to be demolishd after having poured concrete and having waited the concrete to reach the maintenance requirement, its construction is loaded down with trivial details, consume a large amount of manpower financial resources, time limit for a project and cost have been increased, be not conform to the requirement of current assembled trade development, consequently need urgent research and development to have the light weight to excel in, heat preservation fire prevention and impervious dampproofing in an organic whole, can batch production, the little support wire net reinforcing micropore concrete of on-the-spot assembled construction exempts from to demolish the die block board, its cost is economic, the surface is level and smooth, can just reach the formwork requirement with a small amount of support piece, be the key of realizing building assembled quick construction and promoting green energy-saving building.

Disclosure of Invention

In view of the above, the invention aims to provide a few-support steel wire mesh reinforced microporous concrete disassembly-free bottom formwork and a construction method thereof, so as to solve the problems of complicated construction, low efficiency, high construction cost, poor heat preservation and seepage prevention and the like caused by the adoption of bamboo plywood and steel formworks in the existing cast-in-place floor slab of a building.

The purpose of the invention is realized by adopting the following measures:

a little supporting wire net strengthens the cellular concrete and exempts from to dismantle the bottom form board for the cast-in-place concrete floor, is by the cellular lightweight concrete, phi [email protected] steel bar net slice, alkali-resisting glass fiber net grid cloth gapless complex forms; the steel wire mesh and glass fiber mesh reinforced microporous concrete structure is characterized in that glass fiber mesh cloth and phi [email protected] steel bar meshes are compounded together by pouring high-strength lightweight aggregate microporous concrete to form a steel wire mesh and glass fiber mesh cloth dual-reinforced microporous concrete structure, a few-support steel wire mesh reinforced microporous concrete non-dismantling bottom formwork for a cast-in-place concrete floor is used as a permanent non-dismantling bottom formwork with a heat preservation function for the cast-in-place concrete floor, and the ratio of the length L of the plate to the width B of the plate is 2: 1, the thickness is 5 cm-8 cm.

A construction method of a disassembly-free bottom template of reinforced microporous concrete with few supporting steel wire meshes for a cast-in-place concrete floor slab comprises the steps of prefabricating the disassembly-free bottom template according to design size requirements, and using the prefabricated disassembly-free bottom template as a permanent bottom template of the cast-in-place floor slab of a building. During construction, firstly, the requirement of a supporting interval is determined according to the span of a disassembly-free bottom formwork, and a cast-in-place floor disassembly-free bottom formwork supporting piece is arranged according to the requirement, wherein the interval of the supporting piece is not more than 1000 mm; uniformly drilling holes on the disassembly-free bottom template, wherein the hole diameter is consistent with the diameter of the steel core plastic connecting piece rod body, inserting the steel core plastic connecting piece from the bottom, and placing not less than 3 steel core plastic connecting pieces on the disassembly-free bottom template per square meter; then placing the disassembly-free bottom template on the supporting piece, wherein the disassembly-free bottom template is flush with the inner template of the wall body at the lap joint of the wall body; the rest bottom templates are inserted into the steel core plastic connecting pieces according to the same method, placed on the supporting pieces, and the clamping plate rib-hooking connecting pieces are placed between the adjacent non-dismantling bottom template seams, and the spacing between the clamping plate rib-hooking connecting pieces and the non-dismantling bottom template) is not more than 500 mm; and paving and binding phi [email protected] steel bar mesh sheets to be bound and connected with wall steel bars, binding the steel core plastic connecting piece and the clamping plate rib hooking connecting piece with the floor phi [email protected] steel bar mesh sheets together by using binding wires, and anchoring the clamping plate rib hooking connecting piece, the steel core plastic connecting piece and the phi [email protected] steel bar mesh sheets into the floor concrete by pouring the floor concrete.

The advantages and the beneficial effects of the invention are as follows:

1. the invention discloses a prefabricated steel wire mesh reinforced microporous concrete disassembly-free bottom template with less support, which enables factory prefabrication and field assembly type construction, the high-strength light-weight cellular concrete used by the method has the characteristics of light weight, high strength, heat preservation, fire resistance, durability, sound insulation, seepage prevention and the like, has better thermal performance, is matched with the steel wire mesh sheets and the glass fiber mesh cloth, ensures that the bottom template has good mechanical property, high rigidity, large bending load and flat and smooth surface, replaces the bamboo plywood and the steel template used by the prior cast-in-situ floor slab, forms the heat preservation structure at the bottom of the floor slab, ensures that the floor slab does not carry out secondary heat preservation any more, ensures that the cast-in-situ floor slab has the heat insulation performance between households, and the micropores of the independent closed structure enable the water absorption rate to be lower, the affinity of the plastering material is good, the bonding is firm, and the indoor ceiling can be made by properly scraping putty paint, so that the ceiling is beautiful and convenient, and the manufacturing cost is economic.

2. The invention relates to a dismounting-free bottom formwork field assembly type construction of a few-support steel wire mesh reinforced microporous concrete, which is matched with a clamping plate connecting piece and a plastic piece to form reliable connection with a floor slab reinforcing steel bar.

Drawings

FIG. 1 is a structural diagram of a disassembly-free bottom formwork of the reinforced microporous concrete with few supporting steel wire meshes, wherein a is a front view and b is a side view.

FIG. 2 is a detailed construction diagram of a shear wall and a few-support steel wire mesh reinforced microporous concrete disassembly-free bottom formwork.

FIG. 3 is a schematic view of a steel core plastic connector and a clamping plate rib connector for a disassembly-free bottom template. Wherein, a is a steel core plastic connecting piece, and b is a clamping plate and hook rib connecting piece.

Detailed Description

As shown in fig. 1-3, a steel wire mesh reinforced microporous concrete disassembly-free bottom formwork 1 with few supports for a cast-in-place concrete floor (a disassembly-free bottom formwork 1 for short) is formed by compounding microporous lightweight concrete 2, phi [email protected] steel bar mesh sheets 3 and alkali-resistant glass fiber mesh sheets 4 without gaps, and is used as a permanent disassembly-free bottom formwork 1 of the cast-in-place concrete floor. The ratio of the plate length L to the width B is 2: 1, thickness of 5 cm.

A construction method of a disassembly-free bottom template 1 of reinforced microporous concrete with few supporting steel wire meshes for a cast-in-place concrete floor slab comprises the steps of prefabricating the disassembly-free bottom template 1 according to design size requirements, and using the prefabricated disassembly-free bottom template as a permanent bottom template of the cast-in-place floor slab of a building. During construction, firstly, the requirement of a supporting interval is determined according to the span of the disassembly-free bottom formwork 1, supporting pieces 11 (supporting pieces 11 for short) of the disassembly-free bottom formwork of the cast-in-place floor are arranged according to the requirement, and the interval between the supporting pieces 11 is not more than 1000 mm; uniformly drilling holes 5 on the disassembly-free bottom template 1, wherein the hole diameter is consistent with the diameter of a steel core plastic connecting piece 9 rod body, inserting the steel core plastic connecting piece 9 from the bottom, and placing not less than 3 steel core plastic connecting pieces 9 on the disassembly-free bottom template 1 per square meter; then the disassembly-free bottom template 1 is placed on the supporting piece 11 and is flush with the wall inner template 7 at the lap joint of the wall; inserting the steel core plastic connecting pieces 9 into the rest bottom formworks according to the same method, placing the steel core plastic connecting pieces on the supporting pieces 11, placing the clamping plate rib hooking connecting pieces 10 between the adjacent non-dismantling bottom formworks 1, and enabling the distance between the clamping plate rib hooking connecting pieces 10 and the non-dismantling bottom formworks 1) to be not more than 500 mm; and then paving and binding phi [email protected] steel bar mesh sheets 8 to be bound and connected with wall body steel bars 6, then binding the steel core plastic connecting piece 9 and the clamping plate rebar connecting piece 10 with the floor slab phi [email protected] steel bar mesh sheets 8 together by using binding wires, and pouring the floor slab concrete 12, binding and connecting the clamping plate rebar connecting piece 10, the steel core plastic connecting piece 9 and the phi [email protected] steel bar mesh sheets 8 with the floor slab steel bars and anchoring the floor slab concrete 12 to form the bottom formwork supporting system without dismantling of the little-supporting steel wire mesh reinforced microporous concrete. When the concrete floor slab is poured, the concrete floor slab is used as a bottom template. After the floor concrete 12 is cured to meet the strength requirement, only the support piece 11 is needed to be removed, the disassembly-free bottom template 1 is not removed, and the floor concrete and the heat-insulating layer are integrated to meet the requirement of the same service life of the heat-insulating layer and the structure.