Heavy-cast and light-cast building of shell assembly system and construction method

Abstract

A heavy-cast and light-cast building and construction method of a shell assembly system, comprising a hollow steel section column I, a pull-out wall shell net, a steel truss beam and a prestressed floor slab, wherein a plurality of the hollow steel section columns I are connected end to end, and the hollow steel section column I located at the floor elevation is connected to the steel truss beam, an insulation layer is provided on the outer side of the steel truss beam, and a prestressed floor slab is connected to the inner side of the steel truss beam, and a pull-out wall shell net is provided between the outer sides of two adjacent hollow steel section columns I, and the height of the pull-out wall shell net is consistent with the height of the hollow steel section column, the insulation layer is butted with the pull-out wall shell net, and the outer side of the insulation layer and the outer side of the pull-out wall shell net are located in the same plane; the hollow steel section column I, the steel truss beam, the pull-out wall shell net and the prestressed floor slab constitute a basic building module. The flexible arrangement of the basic building module in three-dimensional space constructs buildings of various shapes; the design, factory production and construction costs of the present invention are low, and it has huge market promotion potential.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and particularly relates to a heavy-cast and light-cast building of a shell assembly system and a construction method. Background Art

[0002] my country's construction technology has developed by leaps and bounds in the past two decades, and various new technologies and processes have emerged one after another. Especially in the past decade, after my country strongly supported and promoted prefabricated buildings, factory-produced building components and on-site assembly building technologies have sprung up everywhere. This prefabricated building technology can improve the standardization of buildings, maximize the construction period, greatly reduce the dependence on technical jobs and reduce worker costs. However, many engineering and technical personnel are also clearly aware of the three existing drawbacks of prefabricated buildings: high construction costs, worrying earthquake resistance, and headaches for plumbing, electrical and electrical pipeline installation and equipment installation.

[0003] How to adhere to the direction of prefabricated buildings and solve the three existing drawbacks of prefabricated buildings while retaining the advantages of prefabricated buildings is the focus of attention of the majority of engineering and technical personnel in my country's construction industry. To this end, the present invention proposes a heavy-cast and light-cast building and construction method of a shell assembly system. Summary of the invention

[0004] The present invention has proposed the concept of shell assembly, heavy pouring and light pouring through years of research. The so-called shell assembly refers to assembling a shell-type building with shell components, i.e. hollow components, and then heavy pouring and light pouring in the shell-type building. The main material of the shell components of the present invention is steel, which is manufactured through factory production to be a modular standard component suitable for rapid assembly on the construction site. At the same time, after the shell components are assembled, the exterior shape and structural shape of the building are also completed, and the subsequent heavy pouring and light pouring construction requirements can be guaranteed; heavy pouring refers to pouring commercial concrete materials currently on the market; light pouring refers to pouring lightweight thermal insulation concrete currently on the market. These two types of pouring are both mature and efficient mechanized construction technologies, so shell assembly, heavy pouring and light pouring are factory-produced building shell components, which are quickly assembled on site and completed by mechanized pouring. This construction method can not only maintain the advantages of prefabricated buildings advocated by the country, but also effectively solve the three existing drawbacks of prefabricated buildings.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A heavy-cast and light-cast building of a shell assembly system, comprising a hollow steel section column I, a pull-out wall shell net, a steel truss beam and a prestressed floor slab, wherein a plurality of the hollow steel section columns I are connected end to end, and the hollow steel section column I located at the floor elevation is connected to the steel truss beam, an insulation layer is arranged on the outer side of the steel truss beam, and a prestressed floor slab is connected to the inner side of the steel truss beam, an pull-out wall shell net is arranged between the outer sides of two adjacent hollow steel section columns I, and the height of the pull-out wall shell net is consistent with the height of the hollow steel section column, and the insulation layer is butted against the pull-out wall shell net , and the outer side surface of the insulation layer and the outer side surface of the open wall shell net are located in the same plane; the hollow steel section column I, steel truss beam, open wall shell net and prestressed floor slab constitute the basic building module, and the four shell components are connected into an integral shell-shaped building by assembly, and then heavy pouring and light pouring are used to form the basic building module. The heavy pouring is to use high-strength commercial concrete to cast the assembled hollow steel section column I, steel truss beam and prestressed floor slab, and the light pouring is to use lightweight polystyrene foam concrete to cast the open wall shell net to form a lightweight insulation wall.

[0007] The basic building module is any one of a cube, a cuboid, a sphere or a triangular prism.

[0008] The steel truss beam is an integrated steel truss beam composed of a hollow steel section column II and a steel truss; the steel truss beam is connected to the hollow steel section column I located at the floor elevation through the hollow steel section column II in the steel truss beam, and then the adjacent steel truss beams are connected.

[0009] A plastic tube is arranged between the outer side of the hollow steel column section I and the open wall shell net to limit the distance between the hollow steel column section I and the open wall shell net, and the open wall shell net is fixed to the hollow steel column section I by inserting screws into the plastic tube.

[0010] The hollow steel segment column I and the hollow steel segment column II have the same structure, both including an outer member and an inner member. The inner member is coaxially mounted inside the outer member, and a connecting frame is welded between the outer member and the inner member to ensure that the outer member and the inner member are concentric and integrated.

[0011] The hollow steel segment column I is provided with a male thread opening and a female thread opening at both ends respectively, and the male thread opening and the female thread opening are simultaneously provided on the outer member or the inner member. When in use, a plurality of hollow steel segment columns I are installed in the order of the male thread opening and the female thread opening to form a hollow structural column. High-strength concrete is poured in the hollow structural column to form a load-bearing column of the basic building module. A male thread opening is provided on the outer member or the inner member at the end where the steel truss is not installed of the hollow steel segment column II.

[0012] The pull-out wall shell net is composed of two expanded steel nets, and the two expanded steel nets are connected by a plurality of tensile steel wires; the pull-out wall shell net is flat during transportation and is pulled out into a wall shell shape during installation and use.

[0013] The prestressed floor slab is composed of multiple layers of prestressed steel bars and expanded steel meshes suspended on the prestressed steel bars. Several of the prestressed steel bars are fixed in layers on the steel trusses of the steel truss beam. Expanded steel meshes are hung on the prestressed steel bars on the top and bottom layers. The prestressed steel bars are installed on the steel trusses of the steel truss beam and fixed, and then prestress is applied.

[0014] The prestressed steel bars of each layer can be arranged in layers in a horizontal, vertical or oblique direction according to the requirements of the building design, and the arrangement directions of the prestressed steel bars of two adjacent layers can be divided into the same direction or different directions.

[0015] The heavy pouring and light pouring can pour one floor at a time; it can also be poured in steps from bottom to top.

[0016] A heavy-casting and light-casting construction method for a shell assembly system comprises the following steps:

[0017] Step 1. Use drawing software to construct a three-dimensional figure of the entire building and draw a construction drawing;

[0018] Step 2. According to the construction drawing of step 1, after the foundation construction is completed, install the hollow steel segment column I at the position of the foundation column. After all the hollow steel segment columns I of the same height are installed, install the same height of the open wall shell net between the outer sides of the two hollow steel segment columns I located on the same plane. Repeat the installation of the hollow steel segment column I and the open wall shell net until the floor elevation is reached;

[0019] Step 3. Install the steel truss beam at the floor elevation, align the hollow steel section column II on the steel truss beam with the hollow steel section column I at the floor elevation in step 2, and fix the steel truss beam. At this time, the pull-out wall shell net in step 2 is connected to the insulation layer on the steel truss beam; install the remaining steel truss beams in sequence;

[0020] Step 4. Install steel bars on the steel truss beams in layers according to the positions in the construction drawings, and stretch them to form prestressed steel bars. When all the prestressed steel bars are installed, hang expansion steel mesh on the prestressed steel bars on the bottom and top floors to form a non-dismantling formwork for pouring the prestressed floor slabs. Close the bottom of the prestressed floor slabs by hanging formwork to prepare for pouring the prestressed floor slabs.

[0021] Step 5. Install fixed electrical pipelines and pre-buried pipelines in the open wall shell net and prestressed floor slab according to the construction drawings;

[0022] Step 6. Use lightweight polystyrene foam concrete to cast the pull-out wall shell net to form a lightweight insulation wall, so that the outer side of the lightweight insulation wall and the insulation layer attached to the outer side of the steel truss of the steel truss beam are located in the same plane;

[0023] Step 7. Use high-strength commercial concrete to pour hollow steel section columns, truss beams and prestressed floor slabs. At this point, the construction of one floor is completed;

[0024] Step 8. Repeat steps 2 to 7 until the entire building is completed.

[0025] Beneficial effects of the present invention:

[0026] 1. It simplifies architectural design and provides an interactive design platform for architectural designers, builders and users. The three parties can confirm the three-dimensional virtual building based on the overlapping design of the building basic modules, and then output the construction drawings through the computer, making the architectural design fast and good, and meeting the personalized needs of users to the greatest extent.

[0027] 2. The use of modular building design for building foundations is particularly conducive to the mass production of standard components by factories, because the components of each building foundation module are at most dozens of types, which facilitates standardized, low-cost, and large-scale production in factories.

[0028] 3. The present invention adopts a series of small component designs such as hollow steel column sections, open wall shell mesh, prestressed floor slabs and steel truss beams. The on-site assembly can be quickly installed with simple auxiliary equipment. At the same time, mechanized pumping and pouring are adopted to make the construction process extremely fast, which can almost meet the requirements of ready-to-use and ready-to-build.

[0029] 4. The present invention does not require formwork or dismantling during the construction process, which greatly saves labor costs, simplifies construction management, and reduces construction costs.

[0030] 5. The present invention adopts a prestressed floor structure, which greatly increases the span of the floor, making the room types flexible and changeable, and meeting people's personalized living requirements to the greatest extent.

[0031] 6. Due to the low design cost, low factory production cost and low construction cost, the total construction cost of the present invention is low and has huge market promotion potential.

[0032] 7. The flexible arrangement of basic building modules in three-dimensional space constructs buildings of various shapes. During the flexible arrangement process, the basic building modules only allow boundary overlap and no cross-construction is allowed, and no redundant structure will be generated in the boundary overlap part.

[0033] 8. The present invention provides a heavy-cast and light-cast building and construction method of a shell assembly system, which adopts modular building design, factory production of standard components, on-site rapid assembly and mechanized pouring construction, realizing a standardized and rapid customization process of the building from design to the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1It is a front view schematic diagram of a heavy-cast and light-cast building of the shell assembly system of the present invention;

[0035] Figure 2 It is a top view schematic diagram of a heavy-cast and light-cast building of the shell assembly system of the present invention;

[0036] 1-Hollow steel column section I; 2-Pull-out wall shell mesh; 3-Steel truss beam; 4-Insulation layer; 5-Inner member; 6-Outer member; 7-Connecting frame; 8-Prestressed steel bar. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] like Figure 1 and Figure 2 As shown, a heavy-cast and light-cast building of a shell assembly system includes a hollow steel section column Ⅰ1, a pull-out wall shell net 2, a steel truss beam 3 and a prestressed floor slab, a plurality of the hollow steel section columns Ⅰ1 are connected end to end, and the hollow steel section column Ⅰ1 located at the floor elevation is connected to the steel truss beam 3, an insulation layer 4 is arranged on the outer side of the steel truss beam 3, and the inner side of the steel truss beam 3 is connected to the prestressed floor slab, a pull-out wall shell net 2 is arranged between the outer sides of two adjacent hollow steel section columns Ⅰ1, and the height of the pull-out wall shell net 2 is consistent with the height of the hollow steel section column, and the insulation layer 4 is connected to the pull-out wall The shell nets 2 are butt-jointed, and the outer side surface of the insulation layer 4 is in the same plane as the outer side surface of the pull-out wall shell net 2; the hollow steel section column Ⅰ1, steel truss beam 3, pull-out wall shell net 2 and prestressed floor slab constitute a basic building module, and the four shell components are connected into an integral shell-shaped building by assembly, and then heavy pouring and light pouring are used to form the basic building module. The heavy pouring is to use high-strength commercial concrete to cast the assembled hollow steel section column Ⅰ1, steel truss beam 3 and prestressed floor slab, and the light pouring is to use lightweight polystyrene foam concrete to cast the pull-out wall shell net 2 to form a lightweight insulation wall.

[0039] The basic building module is any one of a cube, a cuboid, a sphere or a triangular prism.

[0040] The steel truss beam 3 is an integrated steel truss beam 3 composed of a hollow steel section column II and a steel truss; the steel truss beam 3 is connected to the hollow steel section column I1 located at the floor elevation through the hollow steel section column II in the steel truss beam 3, and then the adjacent steel truss beams 3 are connected.

[0041] A plastic tube is arranged between the outer side of the hollow steel column Ⅰ1 and the open wall shell net 2 to limit the distance between the hollow steel column Ⅰ1 and the open wall shell net 2, and the open wall shell net 2 is fixed to the hollow steel column Ⅰ1 by inserting screws into the plastic tube.

[0042] The hollow steel segment column Ⅰ1 and the hollow steel segment column Ⅱ have the same structure, both including an outer member 6 and an inner member 5. The outer member 6 is a square cylindrical member, and the inner member 5 is a cylindrical member. The inner member 5 is coaxially mounted inside the outer member 6, and a connecting frame 7 is welded between the outer member 6 and the inner member 5 to ensure that the outer member 6 and the inner member 5 are concentric and integrated.

[0043] The two ends of the hollow steel segment column Ⅰ1 are respectively provided with a male thread opening and a female thread opening, and the male thread opening and the female thread opening are simultaneously provided on the outer member 6 or the inner member 5. When in use, multiple hollow steel segment columns Ⅰ1 are installed in the order of the male thread opening and the female thread opening to form a hollow structural column with a square outside and a circle inside. High-strength concrete is poured in the hollow structural column to form a load-bearing column of the basic building module; a male thread opening is provided on the outer member 6 or the inner member 5 at one end of the hollow steel segment column Ⅱ where the steel truss is not installed.

[0044] The pull-out wall shell net 2 is composed of two expanded steel nets, and the two expanded steel nets are connected by a plurality of tensile steel wires; the pull-out wall shell net 2 is flat during transportation and is pulled out into a wall shell shape during installation and use.

[0045] The prestressed floor slab is composed of multiple layers of prestressed steel bars 8 and expanded steel meshes suspended on the prestressed steel bars 8. Several of the prestressed steel bars 8 are fixed in layers on the steel trusses of the steel truss beam 3. Expanded steel meshes are suspended on the prestressed steel bars 8 located on the top layer and the bottom layer. The prestressed steel bars 8 are installed on the steel trusses of the steel truss beam 3 and fixed, and then prestress is applied.

[0046] The prestressed steel bars 8 of each layer can be arranged in layers in a horizontal, vertical or oblique direction according to the requirements of the building design. The arrangement directions of the prestressed steel bars 8 of two adjacent layers can be divided into the same direction or different directions.

[0047] The heavy pouring and light pouring can pour one floor at a time; it can also be poured in steps from bottom to top.

[0048] A heavy-casting and light-casting construction method for a shell assembly system comprises the following steps:

[0049] Step 1. Use BIM software to construct a three-dimensional graphic of the entire building and draw a construction drawing;

[0050] Step 2. The length × width × height of the building foundation module is 15m × 5m × 3m, and the building has three floors. According to the construction drawing of step 1, after the foundation construction is completed, install the hollow steel section column Ⅰ1 at the position of the foundation column. After all the hollow steel section columns Ⅰ1 of the same height are installed, install the same height of the open wall shell net 2 between the outer sides of the two hollow steel section columns Ⅰ1 located in the same plane, and repeat the installation of the hollow steel section column Ⅰ1 and the open wall shell net 2 until the floor elevation is reached;

[0051] Step 3. Install the steel truss beam 3 at the floor elevation, align the hollow steel section column II on the steel truss beam 3 with the hollow steel section column I1 at the floor elevation in step 2, and fix the steel truss beam 3. At this time, the pull-out wall shell net 2 in step 2 is connected to the insulation layer 4 on the steel truss beam 3; install the remaining steel truss beams 3 in sequence;

[0052] Step 4. Install steel bars on the steel truss beam 3 in layers according to the positions in the construction drawings, and stretch them to form prestressed steel bars 8. When all the prestressed steel bars 8 are installed, hang expansion steel mesh on the prestressed steel bars 8 at the bottom and top layers to form a non-disassembly formwork for pouring the prestressed floor slab, and close the bottom of the prestressed floor slab by hanging the formwork to prepare for pouring the prestressed floor slab;

[0053] Step 5. Install fixed electrical pipelines and pre-buried pipelines in the pull-out wall shell net 2 and the prestressed floor slab according to the construction drawings;

[0054] Step 6. Use lightweight polystyrene foam concrete to cast the pull-out wall shell net 2 to form a lightweight insulation wall, so that the outer side of the lightweight insulation wall and the insulation layer 4 pasted on the outer side of the steel truss of the steel truss beam 3 are located in the same plane;

[0055] Step 7. Use high-strength commercial concrete to pour hollow steel section columns, truss beams and prestressed floor slabs. At this point, the construction of one floor is completed;

[0056] Step 8. Repeat steps 2 to 7 until the entire building is completed.

Claims

1. A heavy-cast and light-cast building with a shell assembly system, characterized in that: It comprises a hollow steel section column I, an open wall shell net, a steel truss beam and a prestressed floor slab, wherein a plurality of the hollow steel section columns I are connected end to end, and the hollow steel section column I located at the floor elevation is connected to the steel truss beam, an insulation layer is provided on the outer side of the steel truss beam, and a prestressed floor slab is connected on the inner side of the steel truss beam, an open wall shell net is provided between the outer sides of two adjacent hollow steel section columns I, and the height of the open wall shell net is consistent with the height of the hollow steel section column, the insulation layer is butted against the open wall shell net, and the outer side of the insulation layer and the outer side of the open wall shell net are located in the same plane; the hollow steel section column I, the steel truss beam, the open wall shell net and the prestressed floor slab are composed of a basic building module by heavy pouring and light pouring; A plastic tube is provided between the outer side of the hollow steel column section I and the pull-out wall shell net, which is used to limit the distance between the hollow steel column section I and the pull-out wall shell net, and the pull-out wall shell net is fixed to the hollow steel column section I by inserting screws into the plastic tube; The steel truss beam is an integrated steel truss beam composed of a hollow steel section column II and a steel truss; the steel truss beam is connected to the hollow steel section column I located at the floor elevation through the hollow steel section column II in the steel truss beam, and then the adjacent steel truss beams are connected; The prestressed floor slab is composed of multiple layers of prestressed steel bars and expanded steel meshes suspended on the prestressed steel bars. Several of the prestressed steel bars are fixed in layers on the steel trusses of the steel truss beam. Expanded steel meshes are hung on the prestressed steel bars on the top and bottom layers. The prestressed steel bars are installed on the steel trusses of the steel truss beam and fixed, and then prestress is applied.

2. A heavy-cast and light-cast building of a shell assembly system according to claim 1, characterized in that: The basic building module is any one of a cube, a cuboid, a sphere or a triangular prism.

3. The heavy-cast and light-cast building of the shell assembly system according to claim 1, characterized in that: The hollow steel segment column I and the hollow steel segment column II have the same structure, both including an outer member and an inner member. The inner member is coaxially mounted inside the outer member, and a connecting frame is welded between the outer member and the inner member to ensure that the outer member and the inner member are concentric and integrated.

4. A heavy-cast and light-cast building of a shell assembly system according to claim 3, characterized in that: The two ends of the hollow steel section column I are respectively provided with a male thread opening and a female thread opening, and the male thread opening and the female thread opening are simultaneously provided on the outer member or the inner member. When in use, a plurality of hollow steel section columns I are installed in sequence according to the male thread opening and the female thread opening to form a hollow structural column. High-strength concrete is poured in the hollow structural column to form a load-bearing column of the basic building module; A male tooth is provided on the outer member or the inner member of one end of the hollow steel segment column II where the steel truss is not installed.

5. The heavy-cast and light-cast building of the shell assembly system according to claim 1, characterized in that: The pull-out wall shell net is composed of two expanded steel nets, and the two expanded steel nets are connected by a plurality of tensile steel wires; the pull-out wall shell net is flat during transportation and is pulled out into a wall shell shape during installation and use.

6. The heavy-cast and light-cast building of the shell assembly system according to claim 1, characterized in that: The prestressed steel bars of each layer can be arranged in layers in a horizontal, vertical or oblique direction according to the requirements of the building design, and the arrangement directions of the prestressed steel bars of two adjacent layers can be divided into the same direction or different directions.

7. The heavy-casting and light-casting construction method of a shell assembly system according to claim 1, characterized in that: The following steps are involved: Step 1. Use drawing software to construct a three-dimensional figure of the entire building and draw a construction drawing; Step 2. According to the construction drawing of step 1, after the foundation construction is completed, install the hollow steel segment column I at the position of the foundation column. After all the hollow steel segment columns I of the same height are installed, install the same height of the open wall shell net between the outer sides of the two hollow steel segment columns I located on the same plane. Repeat the installation of the hollow steel segment column I and the open wall shell net until the floor elevation is reached; Step 3. Install the steel truss beam at the floor elevation, align the hollow steel section column II on the steel truss beam with the hollow steel section column I at the floor elevation in step 2, and fix the steel truss beam. At this time, the pull-out wall shell net in step 2 is connected to the insulation layer on the steel truss beam; install the remaining steel truss beams in sequence; Step 4. Install steel bars on the steel truss beams in layers according to the positions in the construction drawings, and stretch them to form prestressed steel bars. When all the prestressed steel bars are installed, hang expansion steel mesh on the prestressed steel bars on the bottom and top floors to form a non-dismantling formwork for pouring the prestressed floor slabs. Close the bottom of the prestressed floor slabs by hanging formwork to prepare for pouring the prestressed floor slabs. Step 5. Install fixed electrical pipelines and pre-buried pipelines in the open wall shell net and prestressed floor slab according to the construction drawings; Step 6. Use lightweight polystyrene foam concrete to cast the pull-out wall shell net to form a lightweight insulation wall, so that the outer side of the lightweight insulation wall and the insulation layer attached to the outer side of the steel truss of the steel truss beam are located in the same plane; Step 7. Use high-strength commercial concrete to pour hollow steel section columns, truss beams and prestressed floor slabs. At this point, the construction of one floor is completed; Step 8. Repeat steps 2 to 7 until the entire building is completed.

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