Floor horizontal support structure and construction method thereof

Abstract

The present invention provides a novel floor horizontal support structure, wherein the horizontal support is fixedly connected to the floor steel beam, and the horizontal support is composed of a plurality of horizontally arranged steel belts, wherein the thickness of the steel belts is equivalent to the thickness of the flange plate of the floor steel beam, and the width of each steel belt is selectively customized according to the stress requirements of the structure; one end of the steel belt of the horizontal support is horizontally connected to the upper flange of the floor steel beam, and the other end is connected to the frame column; bolts are arranged on the surface of the steel belt along its length direction, and a construction method of the novel floor horizontal support structure is also provided, wherein the intersection point of the floor horizontal support and the steel beam is found; a steel plate having a thickness equivalent to that of the flange plate of the steel beam is cut into steel belts, one end of the steel belt is horizontally aligned with the upper flange plate of the steel beam, and is pre-connected with the left side of the upper flange of the steel beam by installing an anchor plate, and the other end of the steel belt is connected to the frame column; a lining plate is arranged on the lower side of the connection node between the steel belt and the upper flange plate, and both ends of the steel belt support are welded to the structure with equal strength; bolts are fixed to the upper surface of the steel belt, and the connection structure of the present invention has low deadweight, reliable stress, and is not affected by the secondary beams of the floor.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure buildings, and particularly relates to a floor horizontal support structure and a construction method thereof. Background Art

[0002] For high-rise and super-high-rise buildings, the overall stiffness and bearing capacity of the floor structure play a vital role in ensuring the rigid floor assumption, making the overall working characteristics of the actual structure as consistent as possible with the design calculation model, and ensuring the overall safety of the structure.

[0003] In actual projects, the floor stiffness of buildings often cannot meet the rigid floor assumption for various reasons. For example, because the building plane size is narrow and long and the plane is irregular, the structural torsion effect under earthquake action is more significant. Simply relying on traditional design methods and construction measures cannot guarantee the bearing capacity of the floor structure, and the overall safety of the structure is also weakened. For another example, due to the facade shape and internal functional needs, the floor slabs of buildings are often discontinuous, irregular, and have large openings, and the floor slabs are weakened to varying degrees. These are also very unfavorable for high-rise buildings with seismic fortification requirements (especially in high-intensity areas).

[0004] To solve the above problems, two methods are usually adopted: 1) increase the thickness of the floor slab and its reinforcement; 2) set up horizontal floor supports. Among them, the first method, on the one hand, increasing the thickness of the floor slab not only increases the deadweight of the structure, but also increases the load on the foundation and vertical load-bearing components, and increases the cost; on the other hand, the vertical load corresponding to the deadweight increases the seismic effect, which increases the requirements for the lateral force resistance of the structure, which is not conducive to seismic design. Therefore, in actual projects, the second method is more inclined to be adopted. The horizontal support of the floor usually adopts a rod or beam with a cross-section of I-shaped, rectangular, round tube and angle steel. In the existing practice, the horizontal support connects the floor frame column, and the horizontal support needs to cross the secondary beam of the floor. Because the secondary beams of the floor are usually arranged in parallel, the spacing is about 2.1m~3.3m, and the elevation of the horizontal support is located at the upper flange or lower flange of the floor steel beam, or it can be located within the beam height range. Therefore, the horizontal support will be interrupted by the secondary beam of the floor and become very fragmented. The connection work with the secondary beam during construction is also cumbersome and cannot be widely used. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing practice of setting up horizontal support structures to compensate for the lack of floor rigidity, insufficient bearing capacity, and failure to meet the overall seismic performance often leads to shortcomings such as fragmented support components, complicated connection nodes, and difficult construction.

[0006] In order to solve the above defects, the present invention provides a floor horizontal support method which saves steel, is simple to manufacture, is convenient and quick to construct, is easy to industrialize, and has good social and economic performance. The specific technical means adopted by the present invention are:

[0007] A floor horizontal support structure, wherein the horizontal support is fixedly connected to the floor steel beam, and the horizontal support is composed of a plurality of horizontally arranged steel belts, the thickness of the steel belts is equivalent to the thickness of the flange plate of the floor steel beam, and the width of each steel belt is selectively customized according to the structural force requirements; the left side of the upper flange of the steel beam is connected to the first steel belt, and the right side is connected to the second steel belt, and the ends of the steel belts are set as bevel ends, and the bevel angle can be set arbitrarily, and the steel belts and the upper flange of the steel beam are obliquely intersected at any angle; the first steel belt and the second steel belt are located on the same center line, and their other ends are connected to the frame column A mounting anchor plate is arranged on the upper side of the connection node between the steel belt and the upper flange of the steel beam. The mounting anchor plate is arranged vertically perpendicular to the upper flange and the surface of the steel belt, and its bottom edge spans the connection seam between the steel belt and the flange plate. The left side is fixedly connected to the flange plate, and the right side is fixedly connected to the steel belt. The first steel belt and the second steel belt are connected to each other by arranging the mounting anchor plate. The mounting anchor plate is installed on the center line of the first steel belt and the second steel belt. The mounting anchor plate has three connection points, which are respectively fixedly connected to the first steel belt, the beam flange and the second steel belt; bolts are arranged on the surface of the steel belt along its length direction.

[0008] The beneficial effects of the present invention are as follows: 1) The horizontal support rods of the structure are in the form of steel belt cross-sections, which have low dead weight, are simple and convenient to manufacture in the factory, and are easy to transport and install on site. 2) The new horizontal steel belt support is completely butted against the flange of the floor steel beam edge to edge, and the connection structure is simple and reliable, and is not affected by the arrangement direction and spacing of the secondary beams on the floor. 3) The connection structure between the horizontal steel belt support and the steel column is simple and reliable, and is not limited by the connection angle. 4) Bolts are provided on the horizontal steel belt support, which can be effectively combined with the floor concrete. On the one hand, the overall stiffness of the floor support is increased, and on the other hand, the shortcoming of the simple steel belt itself being relatively soft outside the plane is solved, and the overall effect is good. 5) The installation of anchor plates can ensure direct and efficient force transmission, and will not cause secondary stress to the beam flange due to eccentric connection.

[0009] Preferably, a lining plate is arranged at the lower side of the connection node between the steel strip and the upper flange of the steel beam, and the steel strip and the upper flange of the steel beam are integrated by full penetration welding with a gap. After welding, an equal strength butt connection is formed between the steel strip and the beam flange plate, ensuring the high efficiency of the support connection.

[0010] Preferably, one end of the steel belt connected to the circular frame column is configured as an arc-shaped end portion that matches the surface of the circular frame column.

[0011] Preferably, one end of the steel strip connected to the corner of the rectangular frame column is configured as a dovetail-shaped end portion that matches the corner of the rectangular frame column.

[0012] The construction method of the novel floor horizontal support structure is carried out according to the following steps:

[0013] Step 1: a. Find the intersection of the floor horizontal support and the steel beam according to the floor structure layout; b. Cut the steel plate with the same thickness as the steel beam flange plate into steel strips, and determine the width and quantity of the steel strips according to the structural calculation force requirements;

[0014] Step 2: The ends of the steel strips are made into beveled edges, and the first steel strip is pre-connected with the left side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; the second steel strip is pre-connected with the right side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; during the pre-connection, the steel strip is horizontally aligned with the upper flange plate of the steel beam, and the first steel strip and the second steel strip are arranged on the same line obliquely intersecting the steel beam;

[0015] Step 3: The other end of the steel belt is connected to the frame column, and the connection end of the steel belt and the frame column is made into an end structure matching the surface shape of the frame column;

[0016] Step 4: A lining plate is set at the lower side of the connection node between the steel belt and the upper flange plate. A gap-filled weld is used between the steel belt and the upper flange plate. An equal strength butt connection is formed between the steel belt horizontal support and the beam flange plate. After welding, the installation anchor plate is removed. Similarly, the connection end of the steel belt support and the frame column is welded with equal strength along the direction of the connection seam.

[0017] Step 5: A number of bolts are evenly fixed to the upper surface of all steel strips along the length direction of the component.

[0018] In this method, the steel belt support and the flange of the floor steel beam are completely butted edge to edge. The connection structure is simple and reliable, and is not affected by the layout direction and spacing of the floor secondary beams. It is simple and convenient to make in the factory, and easy to transport and install on site. It can be effectively combined with the floor concrete, which not only increases the overall rigidity of the floor support, but also solves the shortcoming of the simple steel belt itself being relatively soft outside the plane, and the overall effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : Schematic diagram of the connection between the horizontal steel belt support and the flange of the floor steel beam;

[0020] Figure 2 : Horizontal steel belt support and beam flange connection structure;

[0021] Figure 3 : Pre-fixed structure of horizontal steel strip support and beam flange plate;

[0022] Figure 4 : The connection structure between the horizontal steel belt support and the circular frame column;

[0023] Figure 5 : The connection structure between the horizontal steel belt support and the rectangular frame column;

[0024] Figure 6 : Schematic diagram of setting the pegs.

[0025] Figure 7 : Another embodiment structure of horizontal steel belt support;

[0026] Figure 8 : Node structure diagram of the first steel belt and the second steel belt.

[0027] In the figure: steel beam 1, first steel belt 2, second steel belt 3, lining plate 4, installation anchor plate 5, frame column 6. DETAILED DESCRIPTION

[0028] In the description of the present invention, the terms "first", "second" and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance; the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of this specification, the term "one embodiment" or the like means that a specific feature, structure, material or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention.

[0030] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments: Example

[0031] Combined with Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, a floor horizontal support structure is provided, wherein the horizontal support is fixedly connected to the floor steel beam, and the horizontal support is composed of a plurality of horizontally arranged steel strips (2, 3), the thickness of the steel strips (2, 3) is equivalent to the thickness of the flange plate of the floor steel beam 1, and the width of each steel strip is selectively customized according to the structural force requirements; one end of the steel strip (2, 3) of the horizontal support is horizontally connected to the upper flange of the floor steel beam 1, and the other end is connected to the frame column 6; bolts 7 are provided on the surface of the steel strip along its length direction.

[0032] Among them, a lining plate 4 is arranged at the lower side of the connection node between the steel belt and the upper flange of the steel beam, and the steel belt and the upper flange are integrated by full penetration welding with a gap. After welding, an equal strength butt connection is formed between the steel belt support and the beam flange, ensuring the high efficiency of the support connection. Example

[0033] like Figure 1As shown in the example 1, the end of the steel strip is made into a beveled end, which can be set to any angle. The steel strip is obliquely intersected with the flange plate of the steel beam 1, and the intersection angle is set according to the force requirements.

[0034] Furthermore, the left side of the beam flange is connected to the first steel belt 2, and the right side is connected to the second steel belt 3. The first steel belt 2 and the second steel belt 3 are located on the same center line, and the first steel belt 2 and the second steel belt 3 are collinear, forming a structural line that intersects with the steel beam in the force direction, ensuring direct and efficient force transmission. Furthermore, this support structural line is not only designed with one, but also an oblique support in another direction can be added at the intersection. The double oblique line structure is as follows: Figure 7 shown.

[0035] Combination Figure 3 As shown, since the deadweight of the steel strip is not large, the end of the steel strip (2 or 3) can be temporarily fixed to the beam flange plate by using an installation anchor plate 5 before welding. Specifically, an installation anchor plate 5 is provided on the upper side of the connection node between the steel strip and the upper flange of the floor steel beam 1. The installation anchor plate 5 is vertically arranged perpendicular to the upper flange of the steel beam and the surface of the steel strip, and its bottom edge spans the connection seam between the steel strip and the flange plate, and is fixedly connected to the upper flange plate of the steel beam on the left side and to the steel strip (2 or 3) on the right side. Example

[0036] Based on one or more supporting structural lines obliquely intersecting the steel beam designed in the second embodiment, as shown in FIG. Figure 8 As shown, the third embodiment is: the first steel belt 2 and the second steel belt 3 are further connected by an installation anchor plate 5', the installation anchor plate 5' is larger than the above-mentioned anchor plate across a weld, the installation anchor plate 5' is installed on the center line of the first steel belt 2 and the second steel belt 3, and the installation anchor plate 5' has three connection points, which are respectively fixed to the first steel belt 2, the upper flange and the second steel belt 3. The installation anchor plate 5' effectively transmits the force of the first steel belt and the second steel belt, reduces the force of the steel beam, and also has the function of an anchor plate to strengthen the structure of the steel belt and concrete.

[0037] One end of the steel belt connected to the circular frame column 6 is configured as an arc-shaped end portion matching the surface of the circular frame column.

[0038] One end of the steel belt connected to the corner of the rectangular frame column 6 is configured as a dovetail-shaped end portion that matches the corner of the rectangular frame column.

[0039] The specific shape of the mounting anchor plate 5 of the present invention is: the upper part of the mounting anchor plate 5 is square, and the lower part is provided with an arched notch for avoiding the joint. The mounting anchor plate 5' used to connect the first steel belt and the second steel belt needs to be designed with two arched notches.

[0040] The construction method of the above-mentioned floor horizontal support structure is carried out according to the following steps:

[0041] Step 1: a. According to the floor structure layout, find the intersection of the floor horizontal support and the steel beam; b. Cut the steel plate with the same thickness as the steel beam flange plate into steel strips, and determine the width and number of the steel strips according to the structural calculation force requirements.

[0042] Step 2: The ends of the steel strips are made into beveled edges. The first steel strip is pre-connected with the left side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; the second steel strip is pre-connected with the right side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; during the pre-connection, the steel strip is horizontally aligned with the upper flange plate of the steel beam, and the first steel strip and the second steel strip are arranged on the same line oblique to the steel beam.

[0043] Step 3: The other end of the steel belt is connected to the frame column, and the connecting end of the steel belt and the frame column is made into an end structure matching the surface shape of the frame column.

[0044] Step 4: A lining plate is set on the lower side of the connection node between the steel belt and the upper flange plate of the floor beam. A full penetration welding with a gap is used between the steel belt and the upper flange plate. An equal strength butt connection is formed between the steel belt horizontal support and the beam flange plate. After welding is completed, the installation anchor plate is removed; similarly, the connection end of the steel belt support and the frame column is welded with equal strength along the direction of the connection seam.

[0045] Step 5: If Figure 6 As shown, a plurality of studs 7 are evenly fixed to the upper surfaces of all the steel strips along the length direction of the components.

[0046] Furthermore, another set of first steel belts and second steel belts are provided on another oblique line of the steel beam.

[0047] Furthermore, the first steel belt and the second steel belt located on the same oblique line are connected by an installation anchor plate, which is vertically arranged on the steel belt and the steel beam flange plate, and its bottom edge is fixedly connected to the first steel belt, the steel beam flange and the second steel belt.

[0048] The beneficial effects of the present invention are as follows: 1) The horizontal support rods of the structure are in the form of steel strip cross-sections, which are simple and convenient to manufacture in the factory, and convenient to transport and install on site. 2) The horizontal steel strip supports of the structure are completely butted against the flanges of the floor steel beams edge to edge, and the connection structure is simple and reliable, and is not affected by the arrangement direction and spacing of the secondary beams of the floor. 3) The connection structure between the horizontal steel strip supports and the steel columns is simple and reliable, and is not limited by the connection angle. 4) Bolts are provided on the horizontal steel strip supports, which can be effectively combined with the floor concrete. On the one hand, this increases the overall stiffness of the floor support, and on the other hand, it solves the shortcoming of the simple steel strip itself being relatively soft outside the plane, and the overall effect is good.

Claims

1. A floor horizontal support structure, wherein the horizontal support is fixedly connected to the floor steel beam, characterized in that: The horizontal support is composed of a plurality of horizontally arranged steel belts, the thickness of which is equivalent to the thickness of the flange plate of the floor steel beam, and the width of each steel belt is selectively customized according to the structural force requirements; the left side of the upper flange of the steel beam is connected to the first steel belt, and the right side is connected to the second steel belt, the end of the steel belt is set as an angled end, the angle of the angle can be set arbitrarily, and the steel belt and the upper flange of the steel beam are obliquely intersected at any angle; the first steel belt and the second steel belt are located on the same center line, and their other ends are connected to the frame column, and an installation anchor plate is provided on the upper side of the connection node between the steel belt and the upper flange of the steel beam, and the installation anchor plate is vertically arranged perpendicular to the upper flange and the surface of the steel belt, and its bottom side spans the connection seam between the steel belt and the flange plate, and is fixedly connected to the flange plate on the left side and to the steel belt on the right side. The first steel belt and the second steel belt are connected to each other by setting an installation anchor plate, and the installation anchor plate is installed on the center line of the first steel belt and the second steel belt, and the installation anchor plate has three connection points, which are respectively fixed to the first steel belt, the beam flange and the second steel belt; bolts are provided on the surface of the steel belt along its length.

2. The floor horizontal support structure according to claim 1 is characterized in that: A lining plate is arranged at the lower side of the connection node between the steel strip and the upper flange of the steel beam, and the steel strip and the upper flange of the steel beam are integrated by full penetration welding with a gap.

3. The floor horizontal support structure according to claim 1 is characterized in that: One end of the steel belt connected to the circular frame column is set as an arc-shaped end portion matching the surface of the circular frame column.

4. The floor horizontal support structure according to claim 1 is characterized in that: One end of the steel belt connected to the corner of the rectangular frame column is set as a dovetail-shaped end portion matching the corner of the rectangular frame column.

5. The construction method of the horizontal floor support structure as claimed in claim 1 is carried out according to the following steps: Step 1: a. Find the intersection of the floor horizontal support and the steel beam according to the floor structure layout; b. Cut the steel plate with the same thickness as the steel beam flange plate into steel strips, and determine the width and quantity of the steel strips according to the structural calculation force requirements; Step 2: The ends of the steel strips are made into beveled edges, and the first steel strip is pre-connected with the left side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; the second steel strip is pre-connected with the right side of the upper flange of the steel beam at the intersection through at least one mounting anchor plate; during the pre-connection, the steel strip is horizontally aligned with the upper flange plate of the steel beam, and the first steel strip and the second steel strip are arranged on the same line obliquely intersecting the steel beam; Step 3: The other end of the steel belt is connected to the frame column, and the connection end of the steel belt and the frame column is made into an end structure matching the surface shape of the frame column; Step 4: A lining plate is set at the lower side of the connection node between the steel belt and the upper flange plate. A gap-filled weld is used between the steel belt and the upper flange plate. An equal strength butt connection is formed between the steel belt horizontal support and the beam flange plate. After welding, the installation anchor plate is removed. Similarly, the connection end of the steel belt support and the frame column is welded with equal strength along the direction of the connection seam. Step 5: A number of bolts are evenly fixed to the upper surface of all steel strips along the length direction of the component.

6. The construction method of the horizontal floor support structure according to claim 5 is characterized by: Another set of first steel belts and second steel belts arranged on another oblique line of the steel beam is also provided.

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