阅读说明：本技术 一种免拆模叠合板 (Non-dismantling mold laminated slab ) 是由 周绪红 吴方伯 吴充 蒋文 徐静 于 2019-08-20 设计创作，主要内容包括：本发明公开了一种免拆模叠合板,由槽钢或工字钢(1)、螺栓(2)、预制板(3)、后浇混凝土构成,预制板(3)上预埋有扁钢(4)和螺母(5),槽钢或工字钢(1)翼缘或腹板上有与预制板(3)预埋螺母(5)位置相适应的孔洞(6)。施工方法包括如下步骤：将螺母(5)点焊在扁钢(4)指定位置,然后将带螺母(5)的扁钢(4)浇筑在混凝土中,形成预制板(3)；螺栓(2)穿过孔洞(6),将预制板(3)与槽钢或工字钢(1)连接；将组装好的槽钢或工字钢(1)与预制板(3)吊装至施工面标高处,在预制板(3)上绑扎钢筋,浇筑混凝土,待混凝土达到一定强度,拆除螺栓(2),移走槽钢或工字钢(1),形成叠合楼板。(The invention discloses a disassembly-free laminated slab which is composed of channel steel or I-shaped steel (1), bolts (2), a prefabricated slab (3) and post-cast concrete, wherein flat steel (4) and nuts (5) are embedded in the prefabricated slab (3), and holes (6) which are matched with the embedded nuts (5) of the prefabricated slab (3) are formed in the flanges or webs of the channel steel or I-shaped steel (1). The construction method comprises the following steps: spot welding the nuts (5) at the designated positions of the flat steel (4), and then pouring the flat steel (4) with the nuts (5) in concrete to form the precast slab (3); the bolts (2) penetrate through the holes (6) to connect the precast slabs (3) with the channel steel or the I-steel (1); and hoisting the assembled channel steel or I-shaped steel (1) and the prefabricated slab (3) to the elevation of the construction surface, binding reinforcing steel bars on the prefabricated slab (3), pouring concrete, removing the bolts (2) when the concrete reaches a certain strength, and removing the channel steel or I-shaped steel (1) to form the laminated floor.)

1. The invention discloses a disassembly-free laminated slab, which consists of channel steel or I-steel (1), bolts (2), precast slabs (3) and post-cast concrete, and is characterized in that: the precast slab (3) is pre-embedded with flat steel (4) and nuts (5), and the flange or web of the channel steel or I-steel (1) is provided with holes (6) corresponding to the positions of the pre-embedded nuts (5) of the precast slab (3).

Technical Field

The invention relates to the field of building construction, in particular to a disassembly-free mold laminated slab.

Background

Fabricated composite floor slabs are an important component of fabricated structures. In the fabricated structure, the laminated floor slab plays an important role. The superposed floor slab bears the vertical load transmitted from the floor and transmits the floor load to the structural beams and the structural columns; the floor slab has high rigidity in the plane, and the adjacent vertical components are coordinated to resist the action of horizontal force together.

Laminated floor slabs are structural members developed more thoroughly in the technology in an assembled structure. At present, the laminated floor slab technology mainly comprises the following three types: 1. a steel bar truss laminated slab; 2. the ribbed prestressed reinforced concrete precast slab; 3. assembled large board. These prior art techniques can substantially meet the needs of the fabricated structures for horizontal members, but still suffer from certain deficiencies.

These deficiencies are particularly manifested in three areas: 1. the steel bar truss composite slab and the ribbed prestressed reinforced concrete prefabricated slab are generally strip-shaped, a plurality of strip-shaped slabs are required to be assembled into a whole slab in the actual construction process, and concrete is poured on the slab after the assembly is finished to form the integral composite floor slab. The two problems are that the stress ribs of the bottom plate are arranged along the length direction of the strip, the reinforcement mode is one-way, the reinforcement in the other direction is a distribution rib or a secondary stress rib, and the stress performance is still different from that of the traditional cast-in-place bidirectional plate. 2. The existence of the longitudinal steel bar trusses or the longitudinal ribs on the steel bar truss laminated slab and the ribbed prestressed reinforced concrete precast slab hinders the flexible arrangement of pipelines to a certain extent. 3. The large prefabricated plate is large in size and self-weight, the deformation of the construction and hoisting process is effectively controlled, the thickness of the bottom plate is increased frequently in engineering practice, large transportation hoisting equipment is needed in the transportation and installation process, and the transportation and construction difficulty is large.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the disassembly-free laminated slab which has the advantages of good stress performance, high rigidity, convenience in construction, wide application range, recyclability and the like.

The invention aims to realize the purpose, and the disassembly-free laminated slab consists of channel steel or I-steel, bolts, precast slabs and post-cast concrete, and is characterized in that: the precast slab is pre-embedded with flat steel and nuts, and the channel steel or I-steel flange or web is provided with holes corresponding to the positions of the pre-embedded nuts of the precast slab.

When the precast slab is manufactured, the nuts are spot-welded at the designated positions of the flat steel, and then the flat steel with the nuts is poured in concrete to form the precast slab. The prefabricated slab is embedded with flat steel longitudinally, so that the longitudinal strength of the prefabricated slab can be improved. When the precast slab is manufactured, the nuts are spot-welded on the flat steel, so that concrete cannot enter the nuts and block the nuts when the precast slab concrete is poured.

A construction method of a disassembly-free laminated slab comprises the following steps: spot-welding nuts at the designated positions of the flat steel, and then pouring the flat steel with the nuts in concrete to form a precast slab; bolts penetrate through the holes to connect the precast slabs with channel steel or I-steel; and hoisting the assembled channel steel or I-shaped steel and the prefabricated slab to the elevation of the construction surface, binding steel bars on the prefabricated slab, pouring concrete, dismantling bolts when the concrete reaches a certain strength, and removing the channel steel or the I-shaped steel to form the laminated floor slab.

The channel steel or the I-steel has higher rigidity, can play a supporting role in the construction process and can be repeatedly used. The prefabricated slab can play the role of a template, and can also be stressed together with post-cast concrete to form a laminated floor slab. Because the prefabricated plate is a flat plate, the prefabricated plate is more suitable for the arrangement of pipelines.

The disassembly-free laminated slab is convenient to construct, high in construction speed and simple in production of the prefabricated slab. The channel steel or the I-steel can be prefabricated in a workshop, and has the advantages of small size, light weight, convenient transportation and low requirements on transportation tools and hoisting equipment, conforms to the development direction of building industrialization and large-scale production, and has good economic benefit and social benefit.

Drawings

Fig. 1 is a schematic structural view of a flat steel and a nut, 4 is the flat steel, and 5 is the nut.

Fig. 2 is a schematic structural view of the prefabricated panel, and fig. 3 is the prefabricated panel.

Fig. 3 is a schematic structural diagram of connection between the precast slab and the channel steel, 2 is a bolt, and 6 is a hole.

FIG. 4 is a schematic view of a joint structure of a precast slab and a channel steel.

FIG. 5 is a schematic diagram of the assembled structure of the prefabricated panels.

Fig. 6 is a schematic structural view of concrete poured on the precast slab.

Fig. 7 is a schematic structural diagram of the composite slab after the channel steel is removed.

Detailed Description

The invention will be further explained with reference to the drawings.

The invention is shown in attached figures 1-7, the object of the invention is realized by the following steps, a disassembly-free laminated slab is composed of channel steel or I-steel 1, bolts 2, precast slabs 3 and post-cast concrete, and the disassembly-free laminated slab is characterized in that: the precast slab 3 is pre-embedded with flat steel 4 and nuts 5, and the flange or web of the channel steel or I-steel 1 is provided with holes 6 corresponding to the positions of the pre-embedded nuts 5 of the precast slab 3.

Fig. 1 is a schematic structural view of a flat steel and a nut, fig. 2 is a schematic structural view of a precast slab, and fig. 3 is a schematic structural view of connection of the precast slab and a channel steel. FIG. 4 is a schematic view of a joint structure of a precast slab and a channel steel.

A construction method of a disassembly-free laminated slab comprises the following steps: spot welding the nuts 5 at the designated positions of the flat steel 4, and then pouring the flat steel 4 with the nuts 5 in concrete to form the precast slab 3; bolts 2 penetrate through the holes 6, and the precast slabs 3 are connected with channel steel or I-steel 1; and hoisting the assembled channel steel or I-steel 1 and the prefabricated slab 3 to the elevation of the construction surface, binding reinforcing steel bars on the prefabricated slab 3, pouring concrete, dismantling the bolts 2 when the concrete reaches a certain strength, and removing the channel steel or I-steel 1 to form a laminated floor. FIG. 5 is a schematic diagram of the assembled structure of the prefabricated panels. Fig. 6 is a schematic structural view of concrete poured on the precast slab. Fig. 7 is a schematic structural diagram of the composite slab after the channel steel is removed.