A three-dimensional mesh earthquake-resistant building structure and construction method
Through the three-dimensional mesh seismic structure and modular construction methods, the problems of traditional buildings in seismic and green buildings are solved, the flexibility and follow-up of the buildings are improved, the seismic force damage is reduced, and the future is satisfied. The beauty of the building and living needs, and saves construction costs and time.
Patent Information
- Application Number
- CN202010777244.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-05
- Publication Date
- 2024-12-06
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In terms of seismic resistance, existing buildings have problems such as the increase in mass, increase in seismic force and the greatest destructiveness of floor slabs. It is difficult to improve the flexibility and follow-up of buildings and meet the needs of future green buildings.
Adopt a three-dimensional mesh seismic structure, including steel truss-type structural walls, steel component mesh non-homogeneous floor slabs and structural columns with steel shells, and connect steel components to form a three-dimensional three-dimensional mesh structure, eliminating traditional beams and floor slabs The concept of the building is increased flexibility and follow-up, and adopts a modular construction method.
Significantly improve the seismic resistance level of buildings, reduce floor slab quality, enhance seismic wave transmission capacity, reduce seismic force damage, meet the beauty and living needs of green buildings in the future, and save construction costs and time.
Smart Images
Figure CN111779130B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of construction, and in particular relates to a three-dimensional mesh earthquake-resistant building structure and a construction method. Background Art
[0002] Over the past two decades, my country has achieved fruitful results in the theory and practice of earthquake-resistant buildings. The earthquake resistance and earthquake-resistant effects of buildings have become better and better, and the earthquake-resistant theory has gradually moved from the passive earthquake-resistant method to the active earthquake-resistant theory research. The so-called "passive" earthquake resistance refers to strengthening the "strength" (thick beams and large columns) of the building to resist the damage caused by earthquake waves; while "active" earthquake resistance is to increase the "flexibility" and "follow-up" of the building according to the characteristics of earthquake wave damage to the building based on the known research results to eliminate and reduce the destructiveness of the earthquake force, among which "follow-up" also includes adding "damping" devices to the building.
[0003] At present, there are many conclusions in the research of earthquake resistance theory that have been proven by practice: First, the "thick beams and large columns" produced by passive earthquake resistance will cause a significant increase in the mass (weight) of the building. The greater the mass (weight) of the building, the greater the earthquake force generated, and the greater the earthquake force, the more destructive it is to the building. When the passive earthquake resistance reaches a certain stage, it will enter a dead loop; second, the floor slab of the building is affected by the earthquake wave and produces the greatest earthquake force, which is the weakest link of the building damaged by earthquake disasters. When an earthquake comes, the "heavy" floor slab is like a huge pendulum under the action of the earthquake wave, which will destroy the structure of the building at will, resulting in catastrophic consequences of house destruction and death. Therefore, how to improve the earthquake resistance of the building, reduce the mass (weight) of the building, make the building structure more "flexible" and "follow-up", adapt to and weaken the destructive power of the earthquake wave, and improve the overall earthquake resistance level of the building is the goal that the vast number of engineering and technical personnel in the construction engineering industry are constantly working hard and pursuing. Summary of the invention
[0004] The purpose of the present invention is to provide a three-dimensional mesh earthquake-resistant building structure and construction method, to change the current passive earthquake-resistant structure of buildings in my country, to improve the "flexibility" and "follow-up performance" of buildings, to reduce the deadweight of floors, to eliminate the hidden dangers of floors that are most likely to be damaged by earthquake forces, and to significantly improve the earthquake resistance level of buildings.
[0005] In order to achieve the above object, the present invention adopts the following technical solution:
[0006] A three-dimensional reticulated seismic building structure includes a steel truss-structured wall, a steel member-based reticulated heterogeneous floor slab, and a structural column with a steel shell. A steel flange is sleeved on the structural column with a steel shell, and the steel flange is connected to the steel members in the steel member-based reticulated heterogeneous floor slab; the steel truss in the steel truss-structured wall is connected to the steel shell in the structural column with a steel shell, and the top of the steel truss in the steel truss-structured wall is connected to the steel members in the upper steel member-based reticulated heterogeneous floor slab, and the bottom of the steel truss in the steel truss-structured wall is connected to the steel members in the lower steel member-based reticulated heterogeneous floor slab or the foundation. A three-dimensional reticulated seismic building is constructed by combining the steel member-based reticulated heterogeneous floor slab, the structural column with a steel shell, and the steel truss-structured wall.
[0007] The steel truss-structured wall is composed of a steel truss and high-strength concrete or lightweight concrete. Wall formwork that does not need to be removed is arranged on two sides of the steel truss used to form the wall surface, and the wall is formed by wrapping the steel truss with high-strength concrete or lightweight concrete.
[0008] The steel member-based reticulated heterogeneous floor slab includes steel members. The steel members are "U"-shaped steel members folded from steel plates. Multiple steel members are arranged crosswise to form a reticulated structure with mesh holes, and are connected by bolts at the intersection points. The steel members open upward, and floor reinforcement cages are arranged inside the steel members, and high-strength concrete is poured to wrap the floor reinforcement cages. A U-shaped bottom plate with its lower surface coplanar with the lower surface of the steel member is arranged at the bottom of the mesh holes of the reticulated structure, and the periphery of the U-shaped bottom plate is connected to the inner side surface of the steel member. Lightweight concrete is poured on the U-shaped bottom plate to form the steel member-based reticulated heterogeneous floor slab.
[0009] The structural column with a steel shell includes a structural column reinforcement cage and a steel shell. The steel shell is composed of two components, and the shape of the steel shell composed of the two components is determined according to the shape of the structural column in the architectural design drawings. The structural column reinforcement cage is arranged inside the steel shell, and the structural column reinforcement cage is wrapped with reinforcement cage concrete; the steel flange is divided into an upper flange plate and a lower flange plate. The two ends of the steel shell are respectively sleeved with the upper flange plate and the lower flange plate. The upper flange plate is connected to the steel members in the upper steel member-based reticulated heterogeneous floor slab, and the lower flange plate is connected to the steel members in the lower steel member-based reticulated heterogeneous floor slab or the foundation.
[0010] The steel truss-structured wall located at the outer facade of the building staircase is arranged coplanarly or at a certain angle with respect to the steel truss-structured wall on its upper layer or lower layer to form a concave-convex outer facade shape; or the steel member-based reticulated heterogeneous floor slab located at the outer facade of the building staircase extends outward with respect to its upper layer or lower layer to form a concave-convex outer facade shape.
[0011] A construction method for a three-dimensional reticulated seismic building structure includes the following steps:
[0012] Step 1. After the building foundation exceeds the foundation zero line, start tying the structural column reinforcement cage;
[0013] Step 2. After the steel cage of the structural column with the steel shell is tied, the lower flange is installed, and the steel shell composed of two matching components is sleeved and installed on the lower flange, and then the upper flange is sleeved on the steel shell, and finally high-strength concrete is poured, and the pouring height is lower than the upper surface of the upper flange;
[0014] Step 3. Install the steel trusses of the steel truss-type structural wall according to the position of the steel truss-type structural wall on the design drawing. The left and right sides of the steel trusses of the steel truss-type structural wall are connected to the steel shell of the structural column with the steel shell. The bottom of the steel truss of the steel truss-type structural wall on the first floor is connected to the foundation, and the top of the steel truss is connected to the steel member of the upper steel member-type mesh inhomogeneous floor slab. The top and bottom of the steel truss of the steel truss-type structural wall on the second floor and above are respectively connected to the steel members in the upper and lower steel member-type mesh inhomogeneous floor slabs;
[0015] Step 4. Install ordinary formwork or non-removal formwork on the steel truss of the steel truss structural wall, and then pour wall concrete to wrap the steel truss of the steel truss structural wall to form a steel truss structural wall, and the wall concrete is high-strength concrete or lightweight granular concrete;
[0016] Step 5. Install the steel components of the steel component type mesh heterogeneous floor between the structural columns with steel shells, so that the steel components are opened upward, and the two ends thereof are overlapped on the upper flange of the structural column with steel shells and fixed by bolts, and at the same time connected with the steel truss in the steel truss type structural wall at the bridging place, and the steel components of the steel component type mesh heterogeneous floor are installed in sequence to form a mesh structure of triangular meshes;
[0017] Step 6. Lay the floor steel cage in the steel member of the triangular mesh structure, and the steel cage in the steel member mesh heterogeneous floor passes through the structural column steel cage on the structural column with steel shell; after the steel cage in the steel member is installed, install the lower steel flange on the structural column with steel shell on the next layer and connect it to the upper part of the steel member; install the U-shaped bottom plate in the triangular mesh of the triangular mesh structure formed by the steel member, and the periphery of the U-shaped bottom plate is connected to the inner side of the steel member, and then pour the lightweight granular concrete in the triangular mesh; pour high-strength concrete in the steel member, and the pouring height does not exceed the lower flange plate in the structural column with steel shell, and the construction of one floor is completed;
[0018] Step 7. Repeat steps 2 to 6 until the entire building is completed.
[0019] The beneficial effects of the present invention are:
[0020] 1. The present invention combines the functions of the large beam and the floor slab in the traditional building structure system, and designs it into a horizontally placed steel member type reticulated structure floor slab. This horizontally placed steel member type reticulated structure can also be called a steel truss type reticulated structure "ribbed" beam, thus eliminating the concept of "beam" in the building structure system of the present invention. A bottom plate is installed at the bottom of the mesh holes formed by this steel truss type reticulated structure ribbed beam, and lightweight concrete is poured thereon to complete the integration structure of the large beam and the floor slab functions in the traditional building structure system.
[0021] 2. The "beam" system structure and the homogeneous floor slab structure with very high rigidity and heavy mass (weight) in traditional buildings are eliminated. The so-called "homogeneous" floor slab means that the floor slab structure and mass are the same when any cross-section is intercepted on the current building floor slab. This horizontally spanning rigid floor slab with a large mass (weight) will generate a large seismic force during an earthquake, hitting and damaging beams, columns and vertical walls, causing the instability and damage of the vertical load-bearing structure of the building, which is a major problem in the current seismic building structure system.
[0022] The steel member type reticulated heterogeneous floor slab of the present invention is composed of a reticulated structure formed by horizontally placed steel members. The steel members are formed by folding steel plates into a "U" shape with the opening facing upward, and are reinforced with steel bars and poured with high-strength concrete according to building codes to ensure the load and rigidity requirements of the floor slab. A bottom plate is installed at the bottom of the mesh holes formed by the horizontally placed steel members, and lightweight concrete is poured thereon to form a steel member type reticulated heterogeneous floor slab, which minimizes the mass (weight) of the floor slab. At the same time, the horizontally placed steel member type reticulated heterogeneous floor slab has a very good force transmission effect, enhancing the ability of the floor slab to horizontally "flexibly" transmit seismic waves, and at the same time enhancing the followability of the building. When an earthquake comes, it can timely transmit and reduce the seismic force, greatly weakening the destructive effect of the seismic force, and playing a role in inspiring the research and exploration of the active seismic theory and practice in the field of architecture in China.
[0023] 3. The present invention eliminates the vertical wall structure system that goes straight down in traditional buildings. At present, the walls of traditional buildings are all constructed in a corresponding manner from top to bottom, that is, if there is a wall on the upper layer, there must also be a corresponding wall on the lower layer, and the wall cannot be directly suspended on the floor slab. Therefore, the exterior facade of the building is a closed large flat facade that goes straight down from top to bottom, without any randomly protruding or concave exterior facade shapes, let alone a suspended exterior facade, which not only affects the ever-changing aesthetic requirements of the building, but also cannot meet the "garden" style living needs of the future "fourth generation" green buildings.
[0024] The present invention makes the interior of the wall into a steel truss structure, and then selects high-strength concrete or lightweight concrete according to the requirements of the building design specifications to wrap the steel truss to form the wall shape. Two or more steel truss structural walls on each floor cooperate with the steel component-type mesh non-homogeneous floor slab to form a "bridge" or "simple tube" (container) structure, which can transmit vertical loads over a large span and change the corresponding relationship between the walls of the upper and lower floors. Many relatively independent three-dimensional mesh-type building spaces can be formed in the main building. Therefore, a variety of building facade shapes can be designed to meet people's personalized apartment and garden-style living requirements. It is suitable for the "fourth generation" green buildings to be developed in the future in my country and can realize "garden-style" personalized independent living space.
[0025] 4. The load-bearing column of the present invention adopts a reinforced concrete column with a steel jacket, that is, there is a reinforced concrete structure in the steel shell, and its reinforcement and concrete strength should meet the national building standards. The appearance of the structural column with a steel jacket is similar to that of a steel structure building. The steel shell is composed of two split components. The steel shell side of the column is connected to the steel truss in the steel truss type structural wall; the two ends of the steel shell are sleeved with an upper flange and a lower flange, the upper flange is connected to the steel component in the upper steel component type mesh inhomogeneous floor slab, and the lower flange is connected to the steel component in the lower steel component type mesh inhomogeneous floor slab; at the same time, the intersection of the steel truss type structural wall and the upper and lower steel component type mesh inhomogeneous floor slabs is also connected by the steel truss in the steel truss type structural wall and the steel component in the steel component type mesh inhomogeneous floor slab, so that the entire building is connected to the steel components, forming a three-dimensional mesh-type building, which greatly improves the safety and earthquake resistance of the building. The steel jacket of the structural column not only improves the compressive and flexural strength of the column, but also saves the need to remove the formwork when pouring concrete.
[0026] 5. It eliminates the traditional construction processes of "beams, slabs, columns, and walls" in the formwork and dismantling processes, greatly saving consumables and labor costs in construction, reducing construction costs, improving construction efficiency, and shortening the construction period.
[0027] 6. The present invention complies with the existing national building design specifications and is an innovation under the existing national building regulations system. It is easy to implement and promote and has strong practicality and operability. In the engineering practice of implementing the present invention, the existing national building design, construction, and acceptance specifications can be gradually supplemented to compile new national building standards.
[0028] 7. The present invention adopts factory-based production of components, modular assembly, and mechanized on-site construction, which is in line with my country's industrial policy and direction for the development of prefabricated buildings. It has huge development potential and a very broad market. It is a permanent industry with broad international competitive development space. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1It is a top view of the three-dimensional mesh earthquake-resistant building structure of the present invention;
[0030] Figure 2 It is a front cross-sectional view of a steel truss structure wall in the three-dimensional mesh earthquake-resistant building structure of the present invention;
[0031] Figure 3 It is a schematic cross-sectional view of a steel member type mesh non-homogeneous floor in the three-dimensional mesh earthquake-resistant building structure of the present invention;
[0032] Figure 4 It is a front cross-sectional view of a structural column with a steel shell in the three-dimensional mesh earthquake-resistant building structure of the present invention;
[0033] 1- structural column with steel shell; 2- steel member; 3- triangular mesh; 4- steel member mesh heterogeneous floor slab; 5- steel truss structural wall; 6- steel truss; 7- wall concrete; 8- wall formwork; 9- floor steel cage; 10- high-strength concrete; 11- U-shaped bottom plate; 12- lightweight granular concrete; 13- lower flange; 14- structural column steel cage; 15- steel shell, 16- upper flange. DETAILED DESCRIPTION
[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] like Figures 1 to 4 As shown, a three-dimensional mesh earthquake-resistant building structure includes a steel truss structural wall 5, a steel member mesh inhomogeneous floor 4 and a structural column 1 with a steel shell, wherein the structural column 1 with a steel shell is provided with a steel flange, and the steel flange is connected to the steel member 2 in the steel member mesh inhomogeneous floor 4; the steel truss 6 in the steel truss structural wall is connected to the steel shell 15 in the structural column 1 with a steel shell, and the top of the steel truss 6 in the steel truss structural wall is connected to the steel member 2 in the upper steel member mesh inhomogeneous floor 4, and the bottom of the steel truss 6 in the steel truss structural wall is connected to the steel member 2 in the lower steel member mesh inhomogeneous floor 4 or the foundation, and the three-dimensional mesh earthquake-resistant building is constructed by combining the steel member mesh inhomogeneous floor 4, the structural column 1 with a steel shell and the steel truss structural wall 5.
[0036] The steel truss structure wall 5 is composed of steel trusses 6 and high-strength concrete 10 or lightweight concrete. Wall non-removable formwork 8 is set on the two sides of the steel trusses 6 used to form the wall surface. The wall is built by wrapping the steel trusses 6 with high-strength concrete 10 or lightweight concrete.
[0037] The steel member type reticulated heterogeneous floor slab 4 includes steel members 2. The steel members 2 are "U"-shaped steel members folded from steel plates. A plurality of steel members 2 are arranged crosswise to form a reticulated structure with mesh holes, and are connected by bolts at the intersection points. The steel members 2 have their openings facing upward. A floor reinforcement cage 9 is arranged inside the steel members 2, and high-strength concrete 10 is poured to wrap the floor reinforcement cage 9. At the bottom of the mesh holes of the reticulated structure, a U-shaped bottom plate 11 with its lower surface coplanar with the lower surface of the steel members 2 is provided, and the periphery of the U-shaped bottom plate 11 is connected to the inner side surface of the steel members 2. Lightweight concrete is poured on the U-shaped bottom plate 11 to form the steel member type reticulated heterogeneous floor slab 4.
[0038] The structural column 1 with a steel shell includes a structural column reinforcement cage 14 and a steel shell 15. The steel shell 15 is composed of two "U"-shaped members, and the members are made of steel. The structural column reinforcement cage 14 is arranged inside the steel shell 15, and the reinforcement cage concrete is poured to wrap the structural column reinforcement cage 14. The steel flange at the lower surface of the steel member type reticulated heterogeneous floor slab 4 is the lower flange plate 13, and the flange at the upper surface of the steel member type reticulated heterogeneous floor slab 4 is the upper flange plate 16. The two ends of the steel shell are respectively sleeved with the upper flange plate 16 and the lower flange plate 13. The upper flange plate 16 is connected to the steel member 2 in the upper layer of the steel member type reticulated heterogeneous floor slab 4, and the lower flange plate 13 is connected to the steel member 2 in the lower layer of the steel member type reticulated heterogeneous floor slab 4.
[0039] The three-dimensional reticulated building refers to an independent space formed by two or more walls and two or more floor slabs in the main building that can be cantilevered and is not restricted by the positions of the upper and lower walls.
[0040] The steel truss type structural wall 5 located at the outer facade of the building staircase is arranged coplanarly or at a certain angle with respect to the steel truss type structural wall 5 on the upper or lower layer to form a concave-convex outer facade shape; or the steel member type reticulated heterogeneous floor slab 4 located at the outer facade of the building staircase extends outward with respect to the upper or lower layer to form a concave-convex outer facade shape.
[0041] A construction method for a three-dimensional reticulated seismic building structure includes the following steps:
[0042] Step 1. Build a six-story building with a length of 10 m, a width of 10 m, and a floor height of 3 m. After the building foundation exceeds the foundation zero line, start tying the structural column reinforcement cage 14, and the tying method is the same as the existing construction method.
[0043] Step 2. After the tying of the structural column reinforcement cage 14 of the structural column 1 with a steel shell is completed, install the lower flange plate 13, and then sleeve and install the steel shell 15 composed of two opposed members on the lower flange plate 13. Then sleeve the upper flange plate 16 on the steel shell 15, and finally pour with high-strength concrete 10, and the pouring height is 300 mm lower than the upper surface of the upper flange plate 16.
[0044] Step 3. Install the steel truss 6 of the steel truss structure wall 5 according to the position of the steel truss structure wall 5 on the design drawing. The left and right sides of the steel truss 6 of the steel truss structure wall 5 are connected to the steel outer shell 15 of the structural column 1 with a steel outer shell. The bottom of the steel truss 6 of the steel truss structure wall 5 on the first floor is connected to the foundation, and the top of the steel truss 6 is connected to the steel member 2 of the steel member type reticulated heterogeneous floor slab 4 on the upper layer. The top and bottom of the steel truss 6 of the steel truss structure wall 5 above the second floor are respectively connected to the steel members 2 in the steel member type reticulated heterogeneous floor slabs 4 on the upper and lower layers;
[0045] Step 4. Install a common formwork or a non-removable formwork on the steel truss 6 of the steel truss structure wall 5, and then pour the wall concrete 7 to wrap the steel truss 6 of the steel truss structure wall 5 to form the steel truss structure wall 5. The wall concrete 7 is high-strength concrete 10 or lightweight foam concrete 12;
[0046] Step 5. Install the steel members 2 of the steel member type reticulated heterogeneous floor slab 4 between the structural columns 1 with steel outer shells. The steel members 2 are "U"-shaped members, with the openings of the steel members 2 facing upward, and both ends of the steel members 2 are lapped on the upper flange 16 of the structural column 1 with a steel outer shell and fixed by bolts. At the same time, the steel members 2 are connected to the steel truss 6 in the steel truss structure wall 5 at the connection point. Install the steel members 2 of the steel member type reticulated heterogeneous floor slab 4 in sequence to form a reticulated structure with triangular mesh holes;
[0047] Step 6. Lay the floor reinforcement cage 9 in the steel members 2 of the triangular reticulated structure. The reinforcement cage in the steel member type reticulated heterogeneous floor slab 4 passes through the structural column reinforcement cage 14 on the structural column with a steel outer shell; after the reinforcement cage in the steel member 2 is installed, install the lower steel flange on the structural column 1 with a steel outer shell on the lower layer and connect it to the upper part of the steel member 2; install the U-shaped bottom plate 11 in the triangular mesh holes 3 formed by the steel members. The periphery of the U-shaped bottom plate 11 is connected to the inner side of the steel member 2, and then pour the lightweight foam concrete 12 in the triangular mesh holes 3; pour the high-strength concrete 10 in the steel member 2, and the pouring height does not exceed the lower flange 13 of the structural column 1 with a steel outer shell.至此一层楼的施工结束;At this point, the construction of the first floor is completed;
[0048] Step 7. Repeat Step 2 to Step 6 until the entire building is completed.
Claims
1. A three-dimensional mesh earthquake-resistant building structure, characterized in that: It includes a steel truss structure wall, a steel member type reticulated heterogeneous floor slab, and a structural column with a steel shell. A steel flange is sleeved on the structural column with a steel shell, and the steel flange is connected to the steel members in the steel member type reticulated heterogeneous floor slab; the steel truss in the steel truss structure wall is connected to the steel shell in the structural column with a steel shell, and the top of the steel truss in the steel truss structure wall is connected to the steel members in the upper steel member type reticulated heterogeneous floor slab, and the bottom of the steel truss in the steel truss structure wall is connected to the steel members in the lower steel member type reticulated heterogeneous floor slab or the foundation. A three-dimensional reticulated seismic-resistant building is constructed by combining the steel member type reticulated heterogeneous floor slab, the structural column with a steel shell, and the steel truss structure wall; the steel member type reticulated heterogeneous floor slab includes steel members, and the steel members are "U"-shaped steel members folded from steel plates. A plurality of steel members are arranged crosswise to form a reticulated structure with mesh holes, and are connected by bolts at the intersection points. The steel members have openings upward, and floor reinforcement cages are arranged inside the steel members, and high-strength concrete is poured to wrap the floor reinforcement cages. A U-shaped bottom plate with a lower surface coplanar with the lower surface of the steel member is arranged at the bottom of the mesh holes of the reticulated structure, and the periphery of the U-shaped bottom plate is connected to the inner side surface of the steel member. Lightweight concrete is poured on the U-shaped bottom plate to form the steel member type reticulated heterogeneous floor slab; The structural column with a steel shell includes a structural column reinforcement cage and a steel shell. The steel shell is composed of two components, and the shape of the steel shell composed of the two components is determined according to the shape of the structural column in the architectural design drawing. A structural column reinforcement cage is arranged inside the steel shell, and the structural column reinforcement cage is wrapped by cage concrete; The steel flange is divided into an upper flange plate and a lower flange plate. The two ends of the steel shell are respectively sleeved with the upper flange plate and the lower flange plate. The upper flange plate is connected to the steel members in the upper steel member type reticulated heterogeneous floor slab, and the lower flange plate is connected to the steel members in the lower steel member type reticulated heterogeneous floor slab or the foundation.
2. A three-dimensional mesh earthquake-resistant building structure according to claim 1, characterized in that: The steel truss structure wall is composed of a steel truss and high-strength concrete or lightweight concrete. Wall formwork that does not need to be removed is arranged on two sides of the steel truss used to form the wall surface, and the wall is formed by wrapping the steel truss with high-strength concrete or lightweight concrete.
3. The three-dimensional mesh earthquake-resistant building structure according to claim 1, characterized in that: The steel truss structure wall located at the outer facade of the building staircase is arranged coplanarly or at a certain angle with respect to the steel truss structure wall on its upper layer or lower layer to form a concave-convex outer facade shape; or the steel member type reticulated heterogeneous floor slab located at the outer facade of the building staircase extends outward with respect to its upper layer or lower layer to form a concave-convex outer facade shape.
4. The construction method of a three-dimensional mesh earthquake-resistant building structure according to claim 1, characterized in that: It includes the following steps: Step 1. After the building foundation exceeds the foundation zero line, start tying the structural column reinforcement cage; Step 2. After the tying of the structural column reinforcement cage of the structural column with a steel shell is completed, install the lower flange plate, sleeve and install the steel shell composed of two mating components on the lower flange plate, then sleeve the upper flange plate on the steel shell, and finally pour high-strength concrete, and the pouring height is lower than the upper surface of the upper flange plate; Step 3. Install the steel trusses of the steel truss structure wall according to the position of the steel truss structure wall on the design drawing. The left and right sides of the steel truss of the steel truss structure wall are connected to the steel shell of the structural column with the steel shell. The bottom of the steel truss of the steel truss structure wall on the first floor is connected to the foundation, and the top of the steel truss is connected to the steel member of the upper steel member mesh inhomogeneous floor slab. The top and bottom of the steel truss of the steel truss structure wall on the second floor and above are respectively connected to the steel members of the upper and lower steel member mesh inhomogeneous floor slabs; Step 4. Install ordinary formwork or non-removable formwork on the steel trusses of the steel truss structural wall, and then pour wall concrete to wrap the steel trusses of the steel truss structural wall to form a steel truss structural wall. The wall concrete is high-strength concrete or lightweight granular concrete; Step 5. Install the steel components of the steel component type mesh heterogeneous floor between the structural columns with steel shells, so that the steel components are opened upward, and the two ends thereof are overlapped on the upper flange of the structural column with steel shells and fixed by bolts, and at the same time connected with the steel truss in the steel truss type structural wall at the bridging point, and the steel components of the steel component type mesh heterogeneous floor are installed in sequence to form a mesh structure of triangular meshes; Step 6. Lay the floor steel cage in the steel member of the triangular mesh structure. The steel cage in the steel member mesh heterogeneous floor passes through the structural column steel cage on the structural column with steel shell; after the steel cage in the steel member is installed, install the lower steel flange on the structural column with steel shell on the next layer and connect it to the upper part of the steel member; install the U-shaped bottom plate in the triangular mesh of the triangular mesh structure formed by the steel member, connect the periphery of the U-shaped bottom plate to the inner side of the steel member, and then pour lightweight granular concrete in the triangular mesh; pour high-strength concrete in the steel member, and the pouring height does not exceed the lower flange plate in the structural column with steel shell, and the construction of one floor is completed; Step 7. Repeat steps 2 to 6 until the entire building is completed.