A design method for modular, stiff, lightweight concrete frame structure system

Abstract

This invention relates to a design method for a modular, rigid, lightweight concrete frame structure system, belonging to the field of high-performance prefabricated building structure technology. The structural system is composed of multiple sets of modular, rigid, lightweight concrete structural units. Each set of modular, rigid, lightweight concrete structural units includes modular, rigid, lightweight concrete beam members, modular, rigid, lightweight concrete primary and secondary beam joint members, and modular, rigid, lightweight concrete beam-column joint members. All modular, rigid, lightweight concrete beam members, modular, rigid, lightweight concrete column members, modular, rigid, lightweight concrete primary and secondary beam joint members, and modular, rigid, lightweight concrete beam-column joint members are composed of lightweight concrete components and rigid components. The design method includes architectural scheme design, structural calculation and analysis, modular component design, and component and connection strength verification. It effectively solves the problems of modularization, lightweighting, and simplification in the design and construction of prefabricated composite structures.

Description

Technical Field

[0001] This invention relates to a design method for a modular, rigid, lightweight concrete frame structure system, belonging to the field of prefabricated building structure technology. Background Technology

[0002] Prefabricated building structures include prefabricated concrete structures, prefabricated steel structures, and prefabricated wood structures. Prefabricated steel and wood structures have shortcomings in fire resistance and corrosion resistance, which limits their application in many scenarios. Prefabricated concrete structures have irreplaceable advantages over other structural forms.

[0003] However, existing prefabricated concrete structures often feature extremely heavy individual components and complex inter-component connections. This necessitates the use of large-scale construction machinery and a large number of skilled workers for construction and installation, undoubtedly increasing construction costs and slowing down the process. Furthermore, existing prefabricated concrete structures are designed as permanent structures, neglecting the ease of demolition and the feasibility of reconfiguration to meet user needs. Consequently, for specific scenarios such as training facilities and temporary buildings, they fail to meet the requirements for flexible disassembly and reconstruction, convenient assembly, and rapid construction without heavy machinery. For example, CN110306690A discloses a prefabricated node connection structure for aluminum alloy-lightweight concrete thin-walled bundled column shear walls, which is divided into a connection structure without concrete beams and a connection structure with concrete beams. Both connection structures include an upper wall, a lower wall, connectors, and baffles. A cavity is pre-reserved at the end of the prefabricated shear wall, with the upper wall above the cavity and the lower wall below. A steel plate is pre-embedded on top of the lower wall at the bottom of the cavity. The connector is placed in the cavity, and its bottom is fixed to the pre-embedded steel plate. A baffle is provided at the opening of the cavity, and the cavity is filled with grout. This patented technology still suffers from problems such as complex construction, high cost, and low construction speed.

[0004] Regarding design methods, CN107391862A discloses a three-dimensional collaborative design method for prefabricated concrete structures. This method includes completing the modular design of the prefabricated building based on drawings, preparing Revit project center files, establishing parametric models of prefabricated components and cast-in-place nodes, loading the parametric components and cast-in-place nodes into the Revit project center files to assemble the overall model, modifying various types of components, and outputting overall model information and individual component drawings. This invention is based on the Revit platform, establishing a visual three-dimensional solid model, and then designing, modifying, and drawing it collaboratively. However, this design approach is not suitable for existing modular prefabricated structural systems. Its stress analysis, calculation, and design methods and approaches are unclear and inconsistent, severely restricting design efficiency.

[0005] To address this, a modular, rigid, lightweight concrete frame structure system and its design method are proposed. This system adopts modular installation, with each component module being lightweight. The components are connected by a completely dry connection, which is simple and convenient for disassembly and assembly without the need for heavy machinery. This significantly improves the construction speed and reduces the complexity, thereby enhancing the versatility of prefabricated concrete structures. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides a design method for a modular, rigid, lightweight concrete frame structure system.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0008] A design method for a modular reinforced lightweight concrete frame structure system, wherein the modular reinforced lightweight concrete frame structure system is composed of multiple sets of modular reinforced lightweight concrete structural units. Each set of modular reinforced lightweight concrete structural units includes modular reinforced lightweight concrete beam members, modular reinforced lightweight concrete column members, modular reinforced lightweight concrete primary and secondary beam joint members, and modular reinforced lightweight concrete beam-column joint members. The design method of this system specifically includes the following steps:

[0009] Step S1: Based on the space and individual component quality requirements proposed by the user, and in conjunction with the load conditions, carry out architectural design and structural calculation analysis, and design modular rigid lightweight concrete structural components based on the relevant results;

[0010] Step S2: Based on the relevant results of S1, verify whether the cross-sectional strength of columns, beams, beam-column joints, and modular rigid lightweight concrete main and secondary beam joint components meets the design requirements, and adjust the design scheme of modular lightweight concrete structural components if necessary.

[0011] Step S3: Based on the relevant results of S1 and the design schemes of modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete column members, modular stiffened lightweight concrete beam-column joint members, and modular stiffened lightweight concrete primary and secondary beam joint members, carry out the design and verification of column-to-column, beam-to-beam, and beam-to-beam column joint connections.

[0012] Step S4: Based on the results of S1 to S3, refine other detailed designs and draw relevant drawings.

[0013] Furthermore, during the structural calculation and analysis in step S1, if the structure considers lateral forces, the modular rigid lightweight concrete column members should be bolted; if the structure does not consider lateral forces, the modular rigid lightweight concrete column members can be pin-connected or bolted; when the connection method between the modular rigid lightweight concrete column members is bolted, the column base and the ground are set as rigid; when the connection method between the modular rigid lightweight concrete column members is pin-connected, the column base and the ground are set as hinged.

[0014] Furthermore, during the structural calculation and analysis in step S1, the connection between the modular rigid lightweight concrete beam-column joint component and the modular rigid lightweight concrete beam component, and the connection between the modular rigid lightweight concrete primary and secondary beam joint component and the modular rigid lightweight concrete beam component, are set as rigid connections.

[0015] Furthermore, step S2 specifically includes the following steps:

[0016] Step S2.1: If the structure does not consider lateral forces, the stiffening components in the modular rigid lightweight concrete column members are not load-bearing components but only serve as structural measures to facilitate connections between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members, and to protect the edges and corners of the modular rigid lightweight concrete column members from impact. When verifying the section strength, only the axial force on the column is considered for the lightweight concrete section. If the structure considers lateral forces, it is also necessary to verify whether the strength of the stiffening component section is sufficient.

[0017] Step S2.2: Verify whether the flexural and shear bearing capacity of the non-reinforced section in the middle of the modular stiffened lightweight concrete beam member, the modular stiffened lightweight concrete beam-column joint member, and the modular stiffened lightweight concrete primary and secondary beam joint member meets the design requirements.

[0018] Step S2.3: If the strength of the component does not meet the design requirements after verification in S2.1 or S2.2, return to step S1 to adjust the component design scheme; if the component meets the design strength requirements but does not meet the weight requirements, use lighter stiff materials or lightweight concrete or optimize the component construction method to reduce the weight of the component.

[0019] Furthermore, step S3 specifically includes the following steps:

[0020] Step S3.1: If the structure does not consider lateral forces, the design of connecting pins or bolts used between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members only needs to consider structural requirements, and the effective cross-sectional diameter of the pins and bolts used should not be less than 10mm; if the structure considers lateral forces, the bolt type used between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members should be determined according to the maximum shear force and maximum bending moment extracted in S1 of the modular rigid lightweight concrete column members;

[0021] Step S3.2: Determine the thickness of the beam-to-beam connector based on the maximum bending moment and shear force extracted from the structural beam in S1;

[0022] Step S3.3: Determine the center position of the bolt holes on the beam-beam connector based on the stiffening component dimensions determined in S2, and determine the bolt types for connecting modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete beam members and modular stiffened lightweight concrete beam-column joint members, and modular stiffened lightweight concrete beam members and modular stiffened lightweight concrete main and secondary beam joint members based on the maximum bending moment and shear force extracted in the beam in S1.

[0023] Step S3.4: Verify whether the local bearing capacity of the bolt holes on the beam-beam connector meets the design requirements. If not, increase the thickness of the beam-beam connector.

[0024] Furthermore, step S4 specifically includes the following steps:

[0025] Step S4.1: Design the handhole size in the modular rigid lightweight concrete column member based on the bolt size determined in S3;

[0026] Step S4.2: Based on the maximum bending moment and shear force extracted in S1 and the bolt types connecting the modular stiffened lightweight concrete beam members, the modular stiffened lightweight concrete beam-column joint members, and the modular stiffened lightweight concrete beam members and the modular stiffened lightweight concrete primary and secondary beam joint members, design the end reinforcement zone stiffening component sections of the modular stiffened lightweight concrete beam members, the modular stiffened lightweight concrete beam-column joint members, and the modular stiffened lightweight concrete primary and secondary beam joint members in accordance with the specifications.

[0027] Step S4.3: Design the anchorage structure between the stiffened components and the lightweight concrete in the modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete column members, modular stiffened lightweight concrete beam-column joint members and modular stiffened lightweight concrete primary and secondary beam joint members.

[0028] Step S4.4: Draw the fabrication drawings and related drawings for the modular rigid lightweight concrete beam members, modular rigid lightweight concrete column members, modular rigid lightweight concrete beam-column joint members, and modular rigid lightweight concrete primary and secondary beam joint members, as well as the overall structural construction drawings.

[0029] Furthermore, the modular stiffened lightweight concrete beam member, the modular stiffened lightweight concrete column member, the modular stiffened lightweight concrete main and secondary beam joint member, and the modular stiffened lightweight concrete beam-column joint member are all composed of lightweight concrete components and stiffening components.

[0030] The modular rigid lightweight concrete beam-column joint component is a cross-shaped component, with its internal rigid components arranged in a cross shape on the edges of the lightweight concrete component along the beam axis. Connectors for connecting to the modular rigid lightweight concrete column component are provided at the four internal corners of the modular rigid lightweight concrete beam-column joint component, with the upper and lower ends of the connectors fixed to the rigid components on the upper and lower edges. Connecting holes for connecting to the modular rigid lightweight concrete beam component are also provided on the upper and lower rigid components at the four ends of the modular rigid lightweight concrete beam-column joint component. The thickness of the rigid components increases near the connecting holes, forming end reinforcement zones.

[0031] The modular rigid lightweight concrete main and secondary beam joint component is a cross-shaped component, in which the rigid components are arranged in a cross shape on the edges of the lightweight concrete component along the beam axis; the rigid components at the upper and lower ends of the four limbs of the modular rigid lightweight concrete main and secondary beam joint component are also provided with connection holes for connecting with the modular rigid lightweight concrete beam component, and the thickness of the rigid components near the connection holes increases to form an end reinforcement zone.

[0032] The modular rigid lightweight concrete column component is a straight component, and the rigid components inside the modular rigid lightweight concrete column component are arranged on the four edges of its lightweight concrete components; the top and bottom four corners of the modular rigid lightweight concrete column component are provided with connectors for connecting with the upper and lower adjacent modular rigid lightweight concrete beam-column joint components or the corresponding modular rigid lightweight concrete column components.

[0033] The modular rigid lightweight concrete beam member is a straight member. The rigid components within the modular rigid lightweight concrete beam member are located on the edges of the lightweight concrete components along the beam axis. Both ends of the modular rigid lightweight concrete beam member have connection holes at the top and bottom for connecting with adjacent modular rigid lightweight concrete beam members, modular rigid lightweight concrete main and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members. The thickness of the rigid components near the connection holes will increase, and the area of ​​increased thickness of the rigid components is the end reinforcement area. Furthermore, adjacent modular rigid lightweight concrete beam members, modular rigid lightweight concrete beam members and modular rigid lightweight concrete beam-column joint members, and modular rigid lightweight concrete beam members and modular rigid lightweight concrete main and secondary beam joint members are all connected by beam-beam connectors inserted into the connection holes.

[0034] A number of modular rigid lightweight concrete beam members are connected to each other or to modular rigid lightweight concrete primary and secondary beam joint members to form a single-span beam. A number of modular rigid lightweight concrete column members are connected to form a single-layer column. The single-span beam and the single-layer column are connected by the modular rigid lightweight concrete beam-column joint members to form a frame structure.

[0035] Furthermore, the lightweight concrete component is foamed concrete or lightweight aggregate concrete; the rigid component is an aluminum alloy, carbon fiber, or basalt fiber frame.

[0036] Furthermore, the connection holes at the ends of the modular rigid lightweight concrete beam members, modular rigid lightweight concrete primary and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members are all through connection holes; the beam-beam connectors have holes at the top and bottom corresponding to the connection hole positions at the ends of the modular rigid lightweight concrete beam members, modular rigid lightweight concrete primary and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members to be connected; the modular rigid lightweight concrete beam members are connected to each other, to each other, and to each other through the beam-beam connectors and the connection holes and openings.

[0037] Furthermore, the vertical connectors within the modular rigid lightweight concrete beam-column joint component are beam-column joint connection holes; the connectors within the modular rigid lightweight concrete column component are column connection holes; the connectors within the modular rigid lightweight concrete primary and secondary beam joint component are primary and secondary beam joint connection holes; the connectors between modular rigid lightweight concrete column components and between modular rigid lightweight concrete beam-column joint components are connected by pins or bolts.

[0038] Furthermore, when the modular rigid lightweight concrete column members are connected to each other, or between the modular rigid lightweight concrete column members and the modular rigid lightweight concrete beam-column joint members, hand holes are provided on the four edges of the modular rigid lightweight concrete column members and the modular rigid lightweight concrete beam-column joint members. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a unit of the modular rigid lightweight concrete structure system of the present invention;

[0040] Figure 2 This is a schematic diagram of the overall modular rigid lightweight concrete structure system of the present invention.

[0041] Figure 3 This is a schematic diagram of the pin connection of the modular rigid lightweight concrete beam-column joint component of the present invention;

[0042] Figure 4 This is a schematic diagram of the bolt connection of the modular rigid lightweight concrete beam-column joint component of the present invention;

[0043] Figure 5 This is a schematic diagram of the end reinforcement zone when the modular rigid lightweight concrete beam-column joint component of the present invention is connected by a pin shaft;

[0044] Figure 6 This is a schematic diagram of the end reinforcement zone when the modular rigid lightweight concrete beam-column joint component of the present invention is bolted;

[0045] Figure 7 This is a schematic diagram of the modular, rigid, lightweight concrete main and secondary beam joint components of the present invention;

[0046] Figure 8 This is a schematic diagram of the end reinforcement zone of the modular, rigid, lightweight concrete main and secondary beam joint component of the present invention;

[0047] Figure 9 This is a schematic diagram of the modular, rigid, lightweight concrete beam component of the present invention;

[0048] Figure 10 This is a schematic diagram of the end reinforcement zone of the modular rigid lightweight concrete beam component of the present invention;

[0049] Figure 11 This is a schematic diagram of the modular, rigid, lightweight concrete column component with pin connector of the present invention;

[0050] Figure 12 This is a schematic diagram of the modular, rigid, lightweight concrete column component with bolted connectors of the present invention;

[0051] Figure 13This is a schematic diagram of the bolt connection between the modular, rigid, lightweight concrete column components of this invention;

[0052] Figure 14 This is a schematic diagram of the bolt connection between the modular rigid lightweight concrete column component and the modular rigid lightweight concrete beam-column joint component of the present invention.

[0053] Figure 15 This is a schematic diagram of the pin connection between the modular, rigid, lightweight concrete column components of the present invention;

[0054] Figure 16 This is a schematic diagram of the pin connection between the modular rigid lightweight concrete column component and the modular rigid lightweight concrete beam-column joint component of the present invention.

[0055] Figure 17 This is a schematic diagram of the connection between the modular, rigid, lightweight concrete beam components of the present invention;

[0056] Figure 18 This is a schematic diagram showing the connection between the modular rigid lightweight concrete beam component and the modular rigid lightweight concrete beam-column joint component of the present invention.

[0057] Figure 19 This is a schematic diagram showing the connection between the modular rigid lightweight concrete beam component and the modular rigid lightweight concrete main and secondary beam joint component of the present invention.

[0058] Figure 20 This is a flowchart of the design of this invention;

[0059] Figure 21 This is a structural design plan view displayed by the design software of this invention;

[0060] Figure 22 This is a diagram showing the axial force distribution within the structural column as displayed by the design software of this invention;

[0061] Figure 23 This is a diagram showing the bending moment distribution within a structural beam, as displayed by the design software of this invention.

[0062] Figure 24 This is a diagram showing the shear force distribution within a structural beam, as displayed by the design software of this invention. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-24 The present invention will be further described in detail below to facilitate a clear understanding of the invention, but these descriptions do not constitute a limitation thereof.

[0064] Example 1

[0065] like Figure 1-2As shown, this invention discloses a design method for a modular, rigid, lightweight concrete frame structure system. The modular, rigid, lightweight concrete frame structure system is composed of multiple sets of modular, rigid, lightweight concrete structural units. Each set of modular, rigid, lightweight concrete structural units includes modular, rigid, lightweight concrete beam members 3, modular, rigid, lightweight concrete column members 2, modular, rigid, lightweight concrete primary and secondary beam joint members 44, and modular, rigid, lightweight concrete beam-column joint members 1. All modular, rigid, lightweight concrete beam members 3, modular, rigid, lightweight concrete column members 2, modular, rigid, lightweight concrete primary and secondary beam joint members 4, and modular, rigid, lightweight concrete beam-column joint members 1 are composed of lightweight concrete components and rigid components. The lightweight concrete components are made of foamed concrete. The rigid components are aluminum alloy frames. Several modular, rigid, lightweight concrete beam members 3, either individually or connected to modular, rigid, lightweight concrete primary and secondary beam joint members 4, form a single-span beam. Several modular, rigid, lightweight concrete column members 2 are connected to form a single-story column. The single-span beams and single-story columns are connected by the modular, rigid, lightweight concrete beam-column joint members 1 to form a frame structure.

[0066] like Figure 3 and Figure 5 As shown, the modular rigid lightweight concrete beam-column joint component 1 is a cross-shaped component, with its internal rigid components arranged in a cross shape on the edges of the lightweight concrete component along the beam axis. Connectors for connecting to the modular rigid lightweight concrete column component 2 are provided at the four internal corners of the modular rigid lightweight concrete beam-column joint component 1, with the upper and lower ends of these connectors fixed to the rigid components on the upper and lower edges. Connecting holes for connecting to the modular rigid lightweight concrete beam component 3 are also provided on the upper and lower rigid components at the ends of the four limbs of the modular rigid lightweight concrete beam-column joint component 1. The thickness of the rigid components increases near the connecting holes, forming an end reinforcement zone 100.

[0067] The modular, rigid, lightweight concrete beam-column joint component 1 is a cross-shaped component. Within it, the lightweight concrete component 11 and the rigid component 12 are respectively the beam-column joint lightweight concrete component 11 and the beam-column joint rigid component 12. The beam-column joint rigid components 12 are arranged in a cross shape on the edges of the beam-column joint lightweight concrete component 11 along the beam axis. The modular, rigid, lightweight concrete beam-column joint component 1 has beam-column joint connection holes 13 at its four internal corners for connection with the modular, rigid, lightweight concrete column component 2. These holes are connected using pins, and their upper and lower ends are fixed to the upper and lower edges of the beam-column joint rigid components 12. The connection between the modular, rigid, lightweight concrete column component 2 and the modular, rigid, lightweight concrete beam-column joint component 1 is also a pin connection. The modular, rigid lightweight concrete beam-column joint member 1 has connecting holes on the upper and lower beam-column joint stiffening components 12 at the ends of its four limbs for connecting with the modular, rigid lightweight concrete beam member 3. The thickness of the stiffening component increases near the connecting holes, forming an end reinforcement zone 100. The lightweight concrete component 11 of the modular, rigid lightweight concrete beam-column joint member has a through hole 14 on its "cross" end section.

[0068] like Figure 7-8 As shown, the modular rigid lightweight concrete primary and secondary beam joint component 4 is a cross-shaped component, with the primary and secondary beam joint stiffening components 42 arranged in a cross shape on the edges of the primary and secondary beam joint lightweight concrete components 41 along the beam axis. The primary and secondary beam joint stiffening components 42, located at the upper and lower ends of the four limbs of the modular rigid lightweight concrete primary and secondary beam joint component 4, are also provided with primary and secondary beam joint connection holes for connecting with the modular rigid lightweight concrete beam component 3. The thickness of the stiffening components increases near the connection holes, forming an end reinforcement zone 100. Through holes 43 are opened on the cross-shaped end section of the primary and secondary beam joint lightweight concrete components 41 of the modular rigid lightweight concrete primary and secondary beam joint component 4.

[0069] like Figure 11 As shown, the modular rigid lightweight concrete column member 2 is a straight member, and the column stiffening component 22 inside the modular rigid lightweight concrete column member 2 is set on the four edges of its column lightweight concrete component 21. Connecting parts for connecting with the adjacent modular rigid lightweight concrete beam-column joint member 1 or the corresponding modular rigid lightweight concrete column member 2 are provided at the top and bottom four corners of the modular rigid lightweight concrete column member 2. In this embodiment, the connecting parts inside the modular rigid lightweight concrete column member 2 are column connection holes. The modular rigid lightweight concrete column member 2 is also provided with a transport embedded part. The modular rigid lightweight concrete column member 2 is connected to each other and to the modular rigid lightweight concrete beam-column joint member 1 by a pin shaft.

[0070] like Figure 9-10 As shown, the modular stiffened lightweight concrete beam member 3 is a straight member. The beam stiffening component 32 within the modular stiffened lightweight concrete beam member 3 is located on the edge of its beam lightweight concrete component 31 along the beam axis. Both ends of the modular stiffened lightweight concrete beam member 3 have connection holes 33 at the top and bottom for connecting with adjacent modular stiffened lightweight concrete beam members 3, modular stiffened lightweight concrete primary and secondary beam joint members 4, and modular stiffened lightweight concrete beam-column joint members 1. The thickness of the beam stiffening component 32 near the connection hole 33 will increase, and the area of ​​increased stiffening component thickness is the end reinforcement area 100.

[0071] like Figure 17-19 The adjacent modular rigid lightweight concrete beam members 3, the modular rigid lightweight concrete beam member 3 and the modular rigid lightweight concrete beam-column joint member 1, and the modular rigid lightweight concrete beam member 3 and the modular rigid lightweight concrete main and secondary beam joint member 4 are all connected together by beam-beam connectors 6. The beam-beam connectors 6 are inserted and fixed in the connection holes 33 by tie bolts 7.

[0072] In this embodiment, as Figure 17-19 The modular lightweight reinforced concrete beam member 3, the modular lightweight reinforced concrete primary and secondary beam joint member 4, and the modular lightweight reinforced concrete beam-column joint member 1 all have through-hole connection holes at their ends. The beam-beam connector 6 has holes at the top and bottom corresponding to the connection holes at the ends of the modular lightweight reinforced concrete beam member 3, the modular lightweight reinforced concrete primary and secondary beam joint member 4, and the modular lightweight reinforced concrete beam-column joint member 1 to be connected. The modular lightweight reinforced concrete beam members 3 are connected to each other, to each other, and to each other via the beam-beam connector 6 and the connection holes / holes. The beam-beam connector 6 is inserted and fixed in the connection hole by tie bolts 7.

[0073] Example 2

[0074] like Figure 1-2As shown in Figures 4, 6-10, 12-14, and 17-19, this invention provides a design method for a modular rigid lightweight concrete frame structure system. The modular rigid lightweight concrete column members 2 are connected to each other, and the modular rigid lightweight concrete column members 2 are connected to the modular rigid lightweight concrete beam-column joint members 1, using bolt connections. Hand holes 25 are provided on the four edges of the modular rigid lightweight concrete column members 2 and the modular rigid lightweight concrete beam-column joint members 1. Other structures and connection methods are the same as in Embodiment 1, and the design method is the same as in Embodiment 2, and will not be described in detail here.

[0075] Example 3

[0076] like Figure 20-24 The modular, rigid, lightweight concrete frame structure design method of the present invention specifically includes the following steps:

[0077] Step S1: Based on the user's requirements for space and individual component quality, and considering the load conditions, conduct architectural design and structural calculation analysis, and design modular rigid lightweight concrete structural components based on the relevant results. During structural calculation analysis in Step S1, if lateral forces are considered, the modular rigid lightweight concrete column component 2 should be bolted. If lateral forces are not considered, the modular rigid lightweight concrete column component 2 can be connected by pins or bolts. When the connection between modular rigid lightweight concrete column components 2 is bolted, the column base is rigidly connected to the ground. When the connection between modular rigid lightweight concrete column components 2 is pin-connected, the column base is hinged to the ground. During structural calculation analysis in Step S1, the connections between modular rigid lightweight concrete beam-column joint component 1 and modular rigid lightweight concrete beam component 3, and between modular rigid lightweight concrete primary and secondary beam joint component 4 and modular rigid lightweight concrete beam component 3, are rigidly connected.

[0078] Step S2: Based on the results of S1, verify whether the section strength of the columns, beams, beam-column joints, and modular reinforced lightweight concrete primary and secondary beam joint components 4 meets the design requirements. If necessary, adjust the design scheme of the modular lightweight concrete structural components. Specifically, this includes the following steps:

[0079] Step S2.1: If the structure does not consider lateral forces, the stiffening components in the modular stiffened lightweight concrete column member 2 are not load-bearing components but only serve as structural measures to facilitate the connection between modular stiffened lightweight concrete column members 2 and between modular stiffened lightweight concrete column members 2 and modular stiffened lightweight concrete beam-column joint members 1, and to protect the edges and corners of the modular stiffened lightweight concrete column members 2 from impact. When verifying the section strength, only the axial force on the column is considered for the lightweight concrete section. If the structure considers lateral forces, it is also necessary to verify whether the strength of the stiffening component section is sufficient.

[0080] Step S2.2: Verify whether the flexural and shear bearing capacity of the non-reinforced section in the middle of the modular stiffened lightweight concrete beam member 3, the modular stiffened lightweight concrete beam-column joint member 1, and the modular stiffened lightweight concrete main and secondary beam joint member 4 meet the design requirements.

[0081] Step S2.3: If the strength of the component does not meet the design requirements after verification in S2.1 or S2.2, return to step S1 to adjust the component design scheme. If the component meets the design strength requirements but not the weight requirements, use lighter stiff materials or lightweight concrete or optimize the component construction method to reduce the weight of the component.

[0082] Step S3: Based on the results of S1 and the design schemes of modular stiffened lightweight concrete beam member 3, modular stiffened lightweight concrete column member 2, modular stiffened lightweight concrete beam-column joint member 1, and modular stiffened lightweight concrete primary and secondary beam joint member 4, conduct the design and verification of column-to-column, beam-to-beam, and beam-to-beam column joint connectors 6. Specifically, this includes the following steps:

[0083] Step S3.1: If the structure does not consider lateral forces, the design of connecting pins or bolts used between modular reinforced lightweight concrete column members 2 and between modular reinforced lightweight concrete column member 2 and modular reinforced lightweight concrete beam-column joint member 1 only needs to consider structural requirements, and the effective cross-sectional diameter of the pins and bolts used should not be less than 10mm. If the structure considers lateral forces, the bolt type used between modular reinforced lightweight concrete column members 2 and between modular reinforced lightweight concrete column member 2 and modular reinforced lightweight concrete beam-column joint member 1 should be determined based on the maximum shear force and maximum bending moment extracted from modular reinforced lightweight concrete column member 2 in S1.

[0084] Step S3.2: Determine the thickness of beam-beam connector 6 based on the maximum bending moment and shear force extracted from the structural beam in S1.

[0085] Step S3.3: Determine the center position of the bolt holes on the beam-beam connector based on the stiffening component dimensions determined in S2, and determine the bolt types for the connection between the modular stiffened lightweight concrete beam members 3, the modular stiffened lightweight concrete beam member 3 and the modular stiffened lightweight concrete beam-column joint member 1, and the modular stiffened lightweight concrete beam member 3 and the modular stiffened lightweight concrete main and secondary beam joint member 4 based on the maximum bending moment and shear force extracted in the beam in S1.

[0086] Step S3.4: Verify whether the local bearing capacity of the bolt holes on the beam-beam connector 6 meets the design requirements. If not, increase the thickness of the beam-beam connector 6.

[0087] Step S4: Based on the results of S1 to S3, refine other detailed designs and draw relevant drawings.

[0088] Specifically, the following steps are included:

[0089] Step S4.1: Design the size of the handhole 25 in the modular rigid lightweight concrete column member 2 according to the bolt size determined in S3.

[0090] Step S4.2: Based on the maximum bending moment and shear force extracted in S1 and the bolt types connecting the modular stiffened lightweight concrete beam member 3, the modular stiffened lightweight concrete beam member 3 and the modular stiffened lightweight concrete beam-column joint member 1, and the modular stiffened lightweight concrete beam member 3 and the modular stiffened lightweight concrete main and secondary beam joint member 4, the end reinforcement zone stiffening component sections of the modular stiffened lightweight concrete beam member 3, the modular stiffened lightweight concrete beam-column joint member 1, and the modular stiffened lightweight concrete main and secondary beam joint member 4 are designed in accordance with the specifications.

[0091] Step S4.3: Design the anchorage structure between the stiffened components and the lightweight concrete in the modular stiffened lightweight concrete beam member 3, the modular stiffened lightweight concrete column member 2, the modular stiffened lightweight concrete beam-column joint member 1, and the modular stiffened lightweight concrete main and secondary beam joint member 4.

[0092] Step S4.4: Draw the fabrication drawings and related drawings for the modular rigid lightweight concrete beam member 3, modular rigid lightweight concrete column member 2, modular rigid lightweight concrete beam-column joint member 1, and modular rigid lightweight concrete main and secondary beam joint member 4, as well as the overall structural construction drawings.

[0093] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the structure of the present invention. The arrangement and quantity of the present invention are not limited to this example and can be optimized according to actual engineering conditions. Any modifications, equivalent changes, and decorations made to the above embodiments based on the technical principles of the present invention, without departing from the scope of the present invention, are still within the scope of the present invention.

Claims

1. A design method for a modular reinforced lightweight concrete frame structure system, wherein the modular reinforced lightweight concrete frame structure system is composed of multiple sets of modular reinforced lightweight concrete structural units, each set of modular reinforced lightweight concrete structural units including modular reinforced lightweight concrete beam members, modular reinforced lightweight concrete column members, modular reinforced lightweight concrete primary and secondary beam joint members, and modular reinforced lightweight concrete beam-column joint members, characterized in that: The modular rigid lightweight concrete beam member, modular rigid lightweight concrete column member, modular rigid lightweight concrete main and secondary beam joint member, and modular rigid lightweight concrete beam-column joint member are all composed of lightweight concrete components and rigid components. The modular rigid lightweight concrete beam-column joint component is a cross-shaped independent joint component. The rigid components inside are arranged in a cross shape on the edge of the lightweight concrete component along the beam axis. The rigid components at the upper and lower ends of the four limbs of the modular rigid lightweight concrete beam-column joint component are provided with connection holes for connecting with the modular rigid lightweight concrete beam component. The thickness of the rigid components near the connection holes increases to form an end reinforcement zone. The modular rigid lightweight concrete main and secondary beam joint component is a cross-shaped independent joint component. The rigid components inside are arranged in a cross shape on the edge of the lightweight concrete component along the beam axis. The rigid components at the upper and lower ends of the four limbs of the modular rigid lightweight concrete main and secondary beam joint component are provided with connection holes for connecting with the modular rigid lightweight concrete beam component. The thickness of the rigid components near the connection holes increases to form an end reinforcement zone. The modular rigid lightweight concrete column component is a straight component, and the rigid components inside the modular rigid lightweight concrete column component are arranged on the four edges of its lightweight concrete component. The modular rigid lightweight concrete beam member is a straight member. The rigid components inside the modular rigid lightweight concrete beam member are set on the edges of its lightweight concrete components along the beam axis. Both ends of the modular rigid lightweight concrete beam member are provided with connection holes for connecting with adjacent modular rigid lightweight concrete beam members, modular rigid lightweight concrete main and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members. The thickness of the rigid components near the connection holes increases to form an end reinforcement zone. The design methodology for this system specifically includes the following steps: Step S1: Based on the user's requirements for space and individual component quality, and in conjunction with the load conditions, conduct architectural design and structural calculation analysis, and design modular rigid lightweight concrete structural components based on the relevant results. Step S2: Based on the relevant results of S1, verify whether the cross-sectional strength of columns, beams, beam-column joints, and modular rigid lightweight concrete main and secondary beam joint components meets the design requirements, and adjust the design scheme of modular lightweight concrete structural components. Step S3: Based on the relevant results of S1 and the design schemes of modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete column members, modular stiffened lightweight concrete beam-column joint members, and modular stiffened lightweight concrete primary and secondary beam joint members, carry out the design and verification of column-to-column, beam-to-beam, and beam-to-beam column joint connections. Step S4: Based on the results of S1-S3, refine other detailed designs and draw relevant drawings.

2. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 1, characterized in that: When performing structural calculation and analysis in step S1, if the structure considers lateral forces, the modular rigid lightweight concrete column members should be bolted; if the structure does not consider lateral forces, the modular rigid lightweight concrete column members can be pin-connected or bolted; when the connection method between the modular rigid lightweight concrete column members is bolted, the column base and the ground are set as rigid; when the connection method between the modular rigid lightweight concrete column members is pin-connected, the column base and the ground are set as hinged.

3. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 2, characterized in that: When performing structural calculation and analysis in step S1, the connection between the modular rigid lightweight concrete beam-column joint component and the modular rigid lightweight concrete beam component, and the connection between the modular rigid lightweight concrete primary and secondary beam joint component and the modular rigid lightweight concrete beam component, are set as rigid connections.

4. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 3, characterized in that: Step S2 specifically includes the following steps: Step S2.1: If the structure does not consider lateral forces, the stiffening components in the modular rigid lightweight concrete column members are not load-bearing components but only serve as structural measures to facilitate connections between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members, and to protect the edges and corners of the modular rigid lightweight concrete column members from impact. When verifying the section strength, only the axial force on the column is considered for the lightweight concrete section. If the structure considers lateral forces, it is also necessary to verify whether the strength of the stiffening component section is sufficient. Step S2.2: Verify whether the flexural and shear bearing capacity of the non-reinforced section in the middle of the modular stiffened lightweight concrete beam member, the modular stiffened lightweight concrete beam-column joint member, and the modular stiffened lightweight concrete primary and secondary beam joint member meets the design requirements. Step S2.3: If the strength of the component does not meet the design requirements after verification in S2.1 or S2.2, return to step S1 to adjust the component design scheme; if the component meets the design strength requirements but does not meet the weight requirements, use lighter stiff materials or lightweight concrete or optimize the component construction method to reduce the weight of the component.

5. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 4, characterized in that: Step S3 specifically includes the following steps: Step S3.1: If the structure does not consider lateral forces, the design of connecting pins or bolts used between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members only needs to consider structural requirements, and the effective cross-sectional diameter of the pins and bolts used should not be less than 10mm; if the structure considers lateral forces, the bolt type used between modular rigid lightweight concrete column members and between modular rigid lightweight concrete column members and modular rigid lightweight concrete beam-column joint members should be determined according to the maximum shear force and maximum bending moment extracted in S1 of the modular rigid lightweight concrete column members; Step S3.2: Determine the thickness of the beam-to-beam connector based on the maximum bending moment and shear force extracted from the structural beam in S1; Step S3.3: Determine the center position of the bolt holes on the beam-beam connector based on the stiffening component dimensions determined in S2, and determine the bolt types for connecting modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete beam members and modular stiffened lightweight concrete beam-column joint members, and modular stiffened lightweight concrete beam members and modular stiffened lightweight concrete main and secondary beam joint members based on the maximum bending moment and shear force extracted in the beam in S1. Step S3.4: Verify whether the local bearing capacity of the bolt holes on the beam-beam connector meets the design requirements. If not, increase the thickness of the beam-beam connector.

6. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 5, characterized in that: Step S4 Specifically, the following steps are included: Step S4.1: Design the handhole dimensions in the modular rigid lightweight concrete column members based on the bolt dimensions determined in S3; Step S4.2: Based on the maximum bending moment and shear force extracted in S1 and the bolt types connecting the modular stiffened lightweight concrete beam members, the modular stiffened lightweight concrete beam-column joint members, and the modular stiffened lightweight concrete beam members and the modular stiffened lightweight concrete primary and secondary beam joint members, design the end reinforcement zone stiffening component sections of the modular stiffened lightweight concrete beam members, the modular stiffened lightweight concrete beam-column joint members, and the modular stiffened lightweight concrete primary and secondary beam joint members in accordance with the specifications. Step S4.3: Design the anchorage structure between the stiffened components and the lightweight concrete in the modular stiffened lightweight concrete beam members, modular stiffened lightweight concrete column members, modular stiffened lightweight concrete beam-column joint members and modular stiffened lightweight concrete primary and secondary beam joint members. Step S4.4: Draw the fabrication drawings and related drawings for modular rigid lightweight concrete beam members, modular rigid lightweight concrete column members, modular rigid lightweight concrete beam-column joint members, and modular rigid lightweight concrete primary and secondary beam joint members, as well as the overall structural construction drawings.

7. The design method for a modular, rigid, lightweight concrete frame structure system according to claim 1, characterized in that: The modular rigid lightweight concrete beam-column joint component has connectors at its four internal corners for connecting with the modular rigid lightweight concrete column component. The upper and lower ends of the connectors are fixed to the rigid components on the upper and lower edges. The modular rigid lightweight concrete column component has connectors at its top and bottom four corners for connecting with the adjacent modular rigid lightweight concrete beam-column joint components or corresponding modular rigid lightweight concrete column components. Several modular rigid lightweight concrete beam components, either individually or connected with modular rigid lightweight concrete primary and secondary beam joint components, form a single-span beam. Several modular rigid lightweight concrete column components are connected to form a single-layer column. The single-span beam and the single-layer column are connected through the modular rigid lightweight concrete beam-column joint components to form a frame structure.

8. The design method for a modular, stiff, lightweight concrete frame structure system according to claim 1 or 7, characterized in that: The lightweight concrete component is foamed concrete or lightweight aggregate concrete; the rigid component is an aluminum alloy, carbon fiber, or basalt fiber frame.

9. The design method for a modular, stiff, lightweight concrete frame structure system according to claim 1 or 7, characterized in that: The connection holes at the ends of the modular rigid lightweight concrete beam members, modular rigid lightweight concrete primary and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members are all through connection holes; the beam-beam connectors have holes at the top and bottom corresponding to the connection hole positions at the ends of the modular rigid lightweight concrete beam members, modular rigid lightweight concrete primary and secondary beam joint members, and modular rigid lightweight concrete beam-column joint members to be connected; the modular rigid lightweight concrete beam members are connected to each other, to each other, and to each other through the beam-beam connectors and the connection holes and openings.

10. The design method for a modular, stiff, lightweight concrete frame structure system according to claim 1 or 7, characterized in that: The vertical connectors within the modular rigid lightweight concrete beam-column joint component are beam-column joint connection holes; the connectors within the modular rigid lightweight concrete column component are column connection holes; the connectors within the modular rigid lightweight concrete primary and secondary beam joint component are primary and secondary beam joint connection holes; the connectors between modular rigid lightweight concrete column components and between modular rigid lightweight concrete beam-column joint components are connected by pins or bolts.

11. The design method for a modular, stiff, lightweight concrete frame structure system according to claim 10, characterized in that: When the modular rigid lightweight concrete column components are connected to each other, or between the modular rigid lightweight concrete column components and the modular rigid lightweight concrete beam-column joint components, hand holes are provided on the four edges of the modular rigid lightweight concrete column components and the modular rigid lightweight concrete beam-column joint components.

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