Design method of reversible and convenient-to-pass ancient building reinforcing structure

By designing the reinforced structure of concrete foundation and truss group on ancient buildings, the problem of wall inclination of ancient buildings is solved, and strong support and cultural relics protection are achieved. At the same time, the reversibility of the reinforcement process and the passage of tourists is ensured, which is satisfactory. The mechanical strength requirements of building structures reduce costs.

CN119163267APending Publication Date: 2024-12-20WUHAN UNIV OF SCI & TECH
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Patent Information

Application Number
CN202311382747.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-10-24
Publication Date
2024-12-20

AI Technical Summary

Technical Problem

Due to the long-standing wall inclination problem, ancient buildings need to be reinforced, but the reinforcement measures need not affect the appearance of the cultural relics and are reversible, taking into account the needs of tourists. The existing technology is difficult to meet these special needs.

Method used

A reinforced structure including concrete foundation and truss group was designed. Through environmental exploration, on-site surveying, inspection and identification, reinforcement design and structural calculation, a finite element model was established to determine the specifications and connection methods of each rod to achieve hazards. The wall supports and improve structural stability through adjustable support parts and oblique support poles, ensuring the reversibility of the reinforcement process and tourists' access.

Benefits of technology

It has achieved effective support for the walls of ancient buildings, reduced the impact on the appearance of cultural relics, facilitated disassembly and assembly, met the mechanical strength requirements of the building structure, and saved costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a design method of a reversible ancient building reinforcing structure facilitating passage, the reinforcing structure comprises a concrete foundation and a truss group, and the truss group comprises a first support truss and a second support truss; the first supporting truss is located on the side close to the dangerous wall body and is parallel to the dangerous wall body. The second supporting truss is located on the side away from the dangerous wall and matched with surrounding buildings. The second longitudinal dowel bars are horizontally arranged between the adjacent second vertical rods through second connecting pieces; a plurality of transverse dowel bars are arranged between the first supporting truss and the second supporting truss and horizontally fixed between the first connecting piece and the second connecting piece. According to the design method of the reversible and convenient-to-pass ancient building reinforcing structure, the reinforcing structure can powerfully support the dangerous wall body of the ancient building, the influence on the cultural relic style and appearance of the ancient building can be reduced, disassembly and assembly are convenient, and the reversibility of the reinforcing process can be achieved.
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Description

Technical Field

[0001] The invention relates to the technical field of ancient building reinforcement construction, and in particular to a reversible and easy-to-access ancient building reinforcement structure design method. Background Art

[0002] Due to their age and other reasons, some ancient buildings have serious tilted walls and need to be reinforced to ensure their safety.

[0003] Unlike modern buildings, the reinforcement of ancient buildings has several special requirements: first, the reinforcement measures must be identifiable to minimize the impact on the cultural relics and features of the ancient buildings; second, the reinforcement measures must be reversible, which means they can be easily demolished during major repairs or other times; finally, the needs of tourists must be taken into account to facilitate their passage and visits. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a reversible and easy-to-access ancient building reinforcement structure design method, the reinforcement structure of which can not only provide strong support for the dangerous walls of the ancient building, but also reduce the impact on the style and appearance of the ancient building cultural relics, and is easy to disassemble and assemble, and the reinforcement process can be reversible.

[0005] The present invention is achieved through the following technical solutions:

[0006] A reversible and easy-to-pass design method for reinforcing a structure of an ancient building, wherein the reinforcing structure comprises a concrete foundation and a truss group fixed on the concrete foundation, wherein the truss group comprises a first supporting truss and a second supporting truss; the first supporting truss is located on a side close to a dangerous wall and arranged along the length direction of the dangerous wall, and comprises a plurality of first uprights and a first longitudinal force transmission rod connecting the first uprights; the first uprights are formed by splicing a plurality of upright units through a first connecting piece; the first longitudinal force transmission rod is horizontally arranged between adjacent first uprights through a first connecting piece, and an adjustable supporting portion abutting against the dangerous wall is provided on the first connecting piece; the second supporting truss is located on a side away from the dangerous wall, and comprises a plurality of second uprights and a second longitudinal force transmission rod connecting the second uprights; the second uprights are formed by splicing a plurality of upright units through a second connecting piece; the second longitudinal force transmission rod is horizontally arranged between adjacent second uprights through a second connecting piece; a plurality of transverse force transmission rods are provided between the first supporting truss and the second supporting truss, and the transverse force transmission rods are horizontally fixed between the first connecting piece and the second connecting piece; the specific design method comprises:

[0007] Step 1: Environmental investigation: find out the type of foundation soil and the depth of foundation around the ancient building, and determine the foundation bearing capacity fa; fa represents the weight that each square meter of soil can bear; the foundation depth of the ancient building and the surrounding houses can be used as a reference for the excavation depth of the concrete foundation, because the depth of the concrete foundation cannot exceed the depth of the original building foundation;

[0008] Step 2: On-site surveying: Restore the structural diagram of the ancient building and the layout of the surrounding buildings, survey the inclination angle θ, deadweight Gq, height Dq and length Hq of the dangerous wall, and survey the construction area S of the concrete foundation; the maximum width of the truss group is determined according to the distance between the ancient building and the surrounding houses, and the construction area S of the concrete foundation is determined accordingly; the deadweight of the dangerous wall is estimated by the height, thickness and density of the wall;

[0009] Step 3: Inspection and appraisal: Find out the reasons, development trends and structural defects of the ancient building wall tilt, give an appraisal rating and provide a basis for reinforcement design;

[0010] Step 4: Reinforcement design: According to the appraisal rating, set the depth of the concrete foundation and the parameters of the truss group;

[0011] Step 5, structural calculation: According to the wall's deadweight Gq and the inclination angle θ, calculate the horizontal thrust Tq = Gq*tan(θ); combine the values ​​of horizontal thrust Tq, wind load W, seismic load E and the parameters of the reinforced structure to establish a finite element model; determine the force Nn of each member and the specifications of each member through iterative calculation of the finite element model; among them, the wind load value is: W = μs*μz*w0; (μs: wind load body shape coefficient; μz: partial pressure height variation coefficient; w0: basic wind pressure); horizontal seismic force value: E = α*G (α: horizontal seismic influence coefficient value; G: gravity load representative value); through the finite element model, set the members of different materials and cross-sectional sizes for iterative calculation, and give safe and economical member specifications;

[0012] Step 6: Calculation of truss nodes: According to the force Nn of each member, calculate the thickness of the connecting plates and the number of connecting bolts at the ends of each member, the first connecting member and the second connecting member through calculation based on the principle of structural mechanics or program modeling;

[0013] Step 7. Anti-overturning verification: The values ​​of combined horizontal thrust Tq, wind load W, seismic load E, self-weight of truss group Gh and self-weight of concrete foundation Gj are verified according to the formula: 1.2(Tq*Lq+W*Lw+E*Le)≤(GhLh+GjLj), where Lq, Lw, Le, Lh and Lj represent the length of the lever arm of each force with the bottom of the second supporting truss as the fulcrum.

[0014] Among them, the reinforcement structure includes a concrete foundation and a truss group. Without destroying the ancient building, it can not only provide strong support for the dangerous walls of the ancient building, but also can be clearly distinguished from the wooden, brick and tile ancient buildings, and can reduce the impact on the style and appearance of the ancient building relics; and it can be easily disassembled and assembled to achieve the reversibility of the reinforcement process; at the same time, the holes in the middle of the truss can facilitate tourists to visit and pass; and the design method can analyze the loads of various components of the steel structure building through evaluation and finite element modeling, and use materials of different strengths for different components, which meets the mechanical strength requirements of the building structure and achieves the effect of cost saving.

[0015] Preferably, the height of the transverse force transmission rod located at the bottom from the ground is not less than 2.5m; in this technical solution, the transverse force transmission rod located at the bottom maintains a certain height to facilitate tourists' visits and passage.

[0016] Preferably, a fourth oblique support rod is provided between the transverse force transmission rod located at the bottom and the first vertical rod and the second vertical rod; in this technical solution, the fourth oblique support rod and the first vertical rod and the second vertical rod each form a triangular stable structure, which can improve the structural stability of the truss group.

[0017] Preferably, a first oblique support rod is provided between adjacent first longitudinal force transmission rods, and the first oblique support rod is fixed between first connecting members; a second oblique support rod is provided between adjacent second longitudinal force transmission rods, and the second oblique support rod is fixed between second connecting members; in the present technical solution, the first oblique support rod is connected to the cell diagonal of the first support truss to form a triangular stable structure, which can enhance the structural stability of the first support truss; similarly, the second oblique support rod is connected to the cell diagonal of the second support truss to form a triangular stable structure, which can enhance the structural stability of the second support truss.

[0018] Preferably, a third oblique support rod is provided between adjacent transverse force transmission rods, and the third oblique support rod is fixed between the first connecting member and the second connecting member; in the present technical solution, the third oblique support rod is connected to the diagonal line of the unit cell formed by the transverse force transmission rod to form a triangular stable structure, which can enhance the stability of the connection structure between the first support truss and the second support truss.

[0019] Preferably, the first connecting member includes a vertical connecting plate and a horizontal connecting plate fixed in the middle of the back side of the vertical connecting plate, and auxiliary connecting plates are symmetrically fixed between the two sides of the middle part of the horizontal connecting plate and the chassis; the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate are arranged perpendicular to each other, and the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate are all provided with bolt holes; a vertical supporting plate is provided in the middle of the front side of the vertical connecting plate; in this technical solution, the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate are arranged perpendicular to each other, and the connecting member can be used as a base to connect the rods in multiple directions, and its structure is simple and easy to manufacture; the bolt holes realize a detachable connection method of the truss group, making the reinforcement process reversible; the structure of the second connecting member is similar to that of the first connecting member.

[0020] Further preferably, the vertical connecting plate is a circular structure, the transverse connecting plate is a semicircular structure, and the auxiliary connecting plate is a fan-shaped structure; in the present technical solution, the first connecting member composed of the vertical connecting plate, the transverse connecting plate and the auxiliary connecting plate is a "hemispherical" structure as a whole, with a neat and beautiful appearance, which can enhance the visual experience of tourists, and more importantly, it can eliminate local stress concentration and enhance the structural strength of the connecting member.

[0021] Further preferably, the adjustable support part includes a support plate, an adjusting rod and a mounting seat, the first connecting sleeve is fixed on the back of the support plate, the mounting seat includes a second connecting sleeve, and a mounting plate is fixed on the end of the second connecting sleeve; the first threaded part and the second threaded part are respectively provided at both ends of the adjusting rod, and the first threaded part and the second threaded part are arranged in opposite directions; the first connecting sleeve is threadedly connected to the first threaded part, and the second connecting sleeve is threadedly connected to the second threaded part; the vertical support plate is provided with a mounting hole and an arc-shaped adjustment hole; in this technical solution, the adjustable support part is rotatably connected to the vertical support plate through the mounting hole, and the installation angle can be adjusted according to actual conditions, the arc-shaped adjustment hole provided on the vertical support plate can be used to lock the adjustable support part by bolts, and the adjusting rod can adjust the adjustable support part in the length direction to achieve a preset contact state with the dangerous wall.

[0022] Further preferably, locking nuts are provided on the first threaded portion and the second threaded portion; in the present technical solution, the locking screws can lock the installation positions of the adjusting rod and the first connecting sleeve and the second connecting sleeve after adjusting the length of the adjustable support portion, so as to ensure the stability of the connection relationship of the structure.

[0023] Further preferably, the ends of the vertical rod unit, the first longitudinal force transmission rod, the second longitudinal force transmission rod, the transverse force transmission rod, the first oblique support rod, the second oblique support rod, the third oblique support rod and the fourth oblique support rod are provided with grooves, and an intermediate connecting plate is provided in the groove; in the present technical solution, a smaller intermediate connecting plate is provided at the end of the rod, so that multiple rods can be connected in a limited installation space without causing mutual interference, thereby facilitating construction.

[0024] The beneficial effects of the present invention are: 1. The reinforcement structure designed by the present invention is simple, and can provide strong support for the dangerous walls of ancient buildings; 2. The appearance of the truss group of the present invention is obviously different from that of ancient buildings made of wood, bricks and tiles, and can reduce the impact on the style and appearance of ancient architectural relics; 3. The truss group of the present invention is assembled in a splicing manner and can be easily disassembled and assembled to achieve the reversibility of the reinforcement process; 4. The hole in the middle of the truss group of the present invention is convenient for tourists to visit and pass; 5. The design method of the present invention analyzes the loads of various components of the steel structure building and adopts materials of different strengths for different components, which not only meets the mechanical strength requirements of the building structure, but also achieves the effect of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the plan layout of a reversible and easy-to-access ancient building reinforcement structure described in Example 1;

[0026] Figure 2 It is a schematic elevational cross-sectional view of a reversible and easy-to-access ancient building reinforcement structure described in Example 1;

[0027] Figure 3 It is a schematic elevation diagram in the length direction of a reversible and easy-to-access ancient building reinforcement structure described in Example 1;

[0028] Figure 4 is a schematic structural diagram of the first connecting member in Embodiment 1;

[0029] Figure 5 It is a schematic diagram of the structural arrangement of the vertical connecting plates, the horizontal connecting plates and the auxiliary connecting plates described in the first embodiment;

[0030] Figure 6 It is a structural schematic diagram of the adjustable support part described in Example 1;

[0031] Figure 7 is a schematic structural diagram of the second connecting member in Embodiment 1;

[0032] Figure 8 It is a structural schematic diagram of the upright pole unit described in the first embodiment;

[0033] Fig. 9 It is a structural schematic diagram of the embedded base described in Example 1;

[0034] In the figure: 1, concrete foundation; 2, first supporting truss; 21, first vertical pole; 22, first longitudinal force transmission rod; 23, first connecting member; 231, vertical connecting plate; 232, horizontal connecting plate; 233, auxiliary connecting plate; 234, vertical supporting plate; 2341, arc-shaped adjustment hole; 2342, mounting hole; 235, adjustable supporting part; 2351, supporting plate; 2352, first connecting sleeve; 2353, adjusting rod; 2354, second Connecting sleeve; 2355, mounting plate; 2356, locking nut; 24, first oblique support rod; 3, second supporting truss; 31, second vertical pole; 32, second longitudinal force transmission rod; 33, second connecting piece; 34, second oblique support rod; 4, transverse force transmission rod; 41, third oblique support rod; 42, fourth oblique support rod; 5, vertical pole unit; 51, middle connecting plate; 6, dangerous wall; 7, surrounding buildings; 8, fulcrum; 9, embedded base. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] like Figures 1 to 9As shown, a reversible and easy-to-access ancient building reinforcement structure design method, wherein the reinforcement structure includes a concrete foundation 1 and a truss group fixed on the concrete foundation 1, the concrete foundation 1 is provided with an embedded base 9, the truss group is fixed on the embedded base 9, the truss group includes a first support truss 2 and a second support truss 3; the first support truss is located on the side close to the dangerous wall 6 and is arranged along the length direction of the dangerous wall 6, including a plurality of first vertical rods 21 and a first longitudinal force transmission rod 22 connecting the first vertical rods 21; the first vertical rod 21 is spliced ​​by a plurality of vertical rod units 5 through a first connecting piece; the first longitudinal force transmission rod 22 is horizontally arranged at Between adjacent first vertical poles, and the first connecting member 23 is provided with an adjustable supporting portion 235 abutting against the dangerous wall 6; the second supporting truss 3 is located on the side away from the dangerous wall 6, and is adapted to the surrounding buildings 7, including a plurality of second vertical poles 31 and a second longitudinal force transmission rod 32 connecting the second vertical poles 31; the second vertical pole 31 is formed by splicing a plurality of vertical pole units 5 through the second connecting member 33; the second longitudinal force transmission rod 32 is horizontally arranged between adjacent second vertical poles 31 through the second connecting member 33; a plurality of transverse force transmission rods 4 are provided between the first supporting truss 2 and the second supporting truss 3, and the transverse force transmission rods 4 are horizontally fixed between the first connecting member 23 and the second connecting member 33.

[0038] Preferably, the height of the transverse force transmission rod at the bottom from the ground is not less than 2.5m to facilitate tourists to visit and pass; a first oblique support rod 24 is provided between adjacent first longitudinal force transmission rods 22, and the first oblique support rod 24 is fixed between the first connecting members 23; a second oblique support rod 34 is provided between adjacent second longitudinal force transmission rods 32, and the second oblique support rod 34 is fixed between the second connecting members 33; a third oblique support rod 41 is provided between adjacent transverse force transmission rods 4, and the third oblique support rod 41 is fixed between the first connecting member 23 and the second connecting member 33; and a fourth oblique support rod 42 is provided between the transverse force transmission rod 4 at the bottom and the first vertical rod 21 and the second vertical rod 31; The first oblique support rod 24, the second oblique support rod 34, the third oblique support rod 41 and the fourth oblique support rod 42 form a triangular stable structure with the truss group, which can enhance the structural strength of the truss group; the first connecting member 23 includes a vertical connecting plate 231 and a horizontal connecting plate 232 fixed to the middle of the back of the vertical connecting plate 231, and auxiliary connecting plates 233 are symmetrically fixed between the middle two sides of the horizontal connecting plate 232 and the vertical connecting plate 231; the vertical connecting plate 231, the horizontal connecting plate 232 and the auxiliary connecting plate 233 are arranged perpendicular to each other, and the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate are all provided with bolt holes; the vertical connecting plate 231 is provided with a vertical support plate 23 in the middle of the front 4; The first connecting member 23 has a simple structure and is easy to manufacture, and can connect rods in multiple directions; the provision of bolt holes can realize a detachable connection mode of the truss group, making the reinforcement process reversible; the second connecting member 33 has a similar structure to the first connecting member 23; specifically, the vertical connecting plate 231 is a circular structure, the horizontal connecting plate 232 is a semicircular structure, and the auxiliary connecting plate 233 is a fan-shaped structure, so that the first connecting member 23 is a "hemispherical" structure as a whole, with a neat and beautiful appearance, which can improve the visual experience of tourists, and more importantly, it can eliminate the local stress concentration phenomenon and improve the structural strength of the connecting member; the adjustable support part 235 includes a support plate 2351, an adjustment rod 2353 and a mounting seat, the back of the support plate 2351 is fixed with a first connecting sleeve 2352, the mounting seat includes a second connecting sleeve 2354, and the end of the second connecting sleeve 2354 is fixed with a mounting plate 2355; the middle of the adjusting rod 2353 is provided with a hexagonal boss, and the two ends are respectively provided with a first threaded portion and a second threaded portion, and the first threaded portion and the second threaded portion are arranged in reverse; the first connecting sleeve is threadedly connected to the first threaded portion, and the second connecting sleeve is threadedly connected to the second threaded portion; the hexagonal boss can facilitate the operation of the torque wrench; the rotation of the adjusting rod 2353 can make the first connecting sleeve 2352 and the second connecting sleeve 2354 move toward or away from each other, thereby adjusting the length of the adjustable support portion 235;The vertical support plate 234 is provided with a mounting hole 2342 and an arc-shaped adjustment hole 2341. The adjustable support portion 235 is rotatably connected to the vertical support plate 234 through the mounting hole 2342, and the mounting angle can be adjusted according to the actual inclination angle of the dangerous wall 6. The arc-shaped adjustment hole 2341 provided on the vertical support plate 234 can be used to lock the mounting plate 2355 of the adjustable support portion through bolts, and the adjustment rod 2353 can adjust the adjustable support portion 235 in the length direction to achieve a preset contact state with the dangerous wall; the first threaded portion and the second threaded portion are provided with locking nuts 2356; the locking nuts 2356 After adjusting the length of the adjustable support part, the nut 2356 can lock the installation position of the adjustment rod 2353 and the first connecting sleeve 2352 and the second connecting sleeve 2354 to ensure the stability of the connection relationship of the structure; the vertical rod unit 5 is made of a round pipe, and slots are provided at both ends. An intermediate connecting plate 51 is welded in the slot, and a bolt hole is provided on the intermediate connecting plate; the first longitudinal force transmission rod 22, the second longitudinal force transmission rod 32, the transverse force transmission rod 4, the first oblique support rod 24, the second oblique support rod 34, the third oblique support rod 41 and the fourth oblique support rod 42 have the same structure as the vertical rod unit 5. ;

[0039] Specific design methods include:

[0040] Step 1: Environmental investigation: find out the type of foundation soil and the depth of foundation around the ancient building, and determine the foundation bearing capacity fa; fa represents the weight that each square meter of soil can bear; the foundation depth of the ancient building and the surrounding houses can be used as a reference for the excavation depth of the concrete foundation, because the depth of the concrete foundation cannot exceed the depth of the original building foundation;

[0041] Step 2: On-site surveying: Restore the structural diagram of the ancient building and the layout of the surrounding buildings, survey the inclination angle θ, deadweight Gq, height Dq and length Hq of the dangerous wall, and survey the construction area S of the concrete foundation; the maximum width of the truss group is determined according to the distance between the ancient building and the surrounding houses, and the construction area S of the concrete foundation is determined accordingly; the deadweight of the dangerous wall is estimated by the height, thickness and density of the wall;

[0042] Step 3: Inspection and appraisal: Find out the reasons and development trends of the tilt of the walls of the ancient buildings, as well as the structural defects, and give appraisal ratings. At the same time, find out the maximum wind force and earthquake level of the environment where the ancient buildings are located, determine the basic wind pressure and horizontal earthquake influence coefficient and other values, and provide a basis for reinforcement design;

[0043] Step 4: Reinforcement design: According to the appraisal rating, set the depth of the concrete foundation and the parameters of the truss group. The parameters of the truss group include the length and height of the first supporting truss and the first supporting truss, the distribution points of the adjustable support part, and the distance between the first supporting truss and the second supporting truss;

[0044] Step 5, structural calculation: According to the wall's deadweight Gq and inclination angle θ, calculate the horizontal thrust Tq = Gq*tan(θ); combine the values ​​of horizontal thrust Tq, wind load W, seismic load E and the parameters of the reinforced structure to establish a finite element model; determine the force Nn of each member and the specifications of each member through iterative calculation of the finite element model; among them, according to the wall's deadweight Gq and inclination angle θ, calculate the horizontal thrust Tq = Gq*tan(θ); wind load value: W = μs*μz*w0; (μs: wind load body shape coefficient; μz: partial pressure height variation coefficient; w0: basic wind pressure); horizontal seismic force value: E = α*G (α: horizontal seismic influence coefficient value; G: gravity load representative value); set the parameters of each member through the finite element model for iterative calculation, and give safe and economical member specifications. The member parameters include the cross-sectional size of the member, material strength requirements and other design parameters;

[0045] Step 6: Calculation of truss nodes: According to the force Nn of each member, calculate the thickness of the connecting plates and the number of connecting bolts of each member end, embedded base, first connecting member and second connecting member through calculation of structural mechanics principle or program modeling;

[0046] Step 7. Anti-overturning verification: The values ​​of combined horizontal thrust Tq, wind load W, seismic load E, self-weight of truss group Gh and self-weight of concrete foundation Gj are verified according to the formula: 1.2(Tq*Lq+W*Lw+E*Le)≤(GhLh+GjLj), where Lq, Lw, Le, Lh and Lj represent the lengths of the force arms of each force with the bottom of the second supporting truss as the fulcrum 8.

[0047] This design method can analyze the loads of various components of steel structure buildings through evaluation and finite element modeling, and use materials of different strengths for different components, which meets the mechanical strength requirements of the building structure and achieves the effect of cost savings.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A reversible and easy-to-access ancient building reinforcement structure design method, characterized in that: The reinforcement structure includes a concrete foundation and a truss group fixed on the concrete foundation, the truss group includes a first support truss and a second support truss; the first support truss is located on the side close to the dangerous wall and arranged along the length direction of the dangerous wall, including a plurality of first vertical poles and a first longitudinal force transmission rod connecting the first vertical poles; the first vertical pole is formed by splicing a plurality of vertical pole units through a first connecting piece; the first longitudinal force transmission rod is horizontally arranged between adjacent first vertical poles through a first connecting piece, and the first connecting piece is provided with an adjustable support portion abutting against the dangerous wall; the second support truss is located on the side away from the dangerous wall, including a plurality of second vertical poles and a second longitudinal force transmission rod connecting the second vertical poles; the second vertical pole is formed by splicing a plurality of vertical pole units through a second connecting piece; the second longitudinal force transmission rod is horizontally arranged between adjacent second vertical poles through a second connecting piece; a plurality of transverse force transmission rods are provided between the first support truss and the second support truss, and the transverse force transmission rods are horizontally fixed between the first connecting piece and the second connecting piece; the specific design method includes: Step 1: Environmental investigation: find out the type of foundation soil and the depth of foundation around the ancient building, and determine the foundation bearing capacity fa; Step 2: On-site surveying: Restore the structural diagram of the ancient building and the layout of the surrounding buildings, survey the inclination angle θ, deadweight Gq, height Dq and length Hq of the dangerous wall, and survey the construction area S of the concrete foundation; Step 3: Inspection and appraisal: Find out the reasons and development trends of the tilt of the ancient building walls, as well as the structural defects, and give an appraisal rating; Step 4: Reinforcement design: set the depth of the concrete foundation and the parameters of the truss group; Step 5: Structural design: Calculate the horizontal thrust Tq = Gq*tan(θ) based on the wall's deadweight Gq and the inclination angle θ. The finite element model is established by combining the numerical values ​​of horizontal thrust Tq, wind load W, earthquake load E and parameters of the reinforced structure; Through iterative calculation of the finite element model, determine the force size Nn of each rod and the specifications of each rod; Step 6: Truss node calculation: According to the force Nn of each member, calculate the thickness of each connecting plate and the number of connecting bolts through structural mechanics principle calculation or program modeling; Step 7. Anti-overturning calculation: Combine the horizontal thrust Tq, wind load W, seismic load E, the self-weight Gh of the truss group and the self-weight Gj of the concrete foundation according to the formula: 1.2(Tq*Lq+W*Lw+E*Le)≤(GhLh+GjLj) Perform verification, where Lq, Lw, Le, Lh, and Lj represent the lengths of the force arms of each force with the bottom of the second supporting truss as the fulcrum.

2. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 1, characterized in that: The height of the transverse force transmission rod located at the bottom from the ground is not less than 2.5m.

3. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 1, characterized in that: A fourth oblique support rod is provided between the transverse force transmission rod located at the bottom and the first vertical rod or the second vertical rod.

4. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 1, characterized in that: A first oblique support rod is provided between adjacent first longitudinal force transmission rods, and the first oblique support rod is fixed between the first connecting members; a second oblique support rod is provided between adjacent second longitudinal force transmission rods, and the second oblique support rod is fixed between the second connecting members.

5. The reversible and easy-to-access ancient building reinforcement structure design method according to claim 1 is characterized in that: A third oblique support rod is provided between adjacent transverse force transmission rods, and the third oblique support rod is fixed between the first connecting member and the second connecting member.

6. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 1, characterized in that: The first connecting member includes a vertical connecting plate and a horizontal connecting plate fixed in the middle of the back side of the vertical connecting plate, and auxiliary connecting plates are symmetrically fixed between the two sides of the middle part of the horizontal connecting plate and the vertical connecting plate; the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate are arranged perpendicular to each other, and bolt holes are provided on the vertical connecting plate, the horizontal connecting plate and the auxiliary connecting plate; a vertical support plate is provided in the middle of the front side of the vertical connecting plate.

7. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 6, characterized in that: The vertical connecting plate is in a circular structure, the horizontal connecting plate is in a semicircular structure, and the auxiliary connecting plate is in a fan-shaped structure.

8. The reversible and easy-to-access ancient building reinforcement structure design method according to claim 6 is characterized in that: The adjustable support part includes a support plate, an adjusting rod and a mounting seat, a first connecting sleeve is fixed to the back of the support plate, the mounting seat includes a second connecting sleeve, and a mounting plate is fixed to the end of the second connecting sleeve; the first threaded portion and the second threaded portion are respectively provided at both ends of the adjusting rod, and the first threaded portion and the second threaded portion are arranged in opposite directions; the first connecting sleeve is threadedly connected to the first threaded portion, and the second connecting sleeve is threadedly connected to the second threaded portion; the vertical support plate is provided with a mounting hole and an arc-shaped adjustment hole.

9. A reversible and easy-to-access ancient building reinforcement structure design method according to claim 8, characterized in that: The first threaded portion and the second threaded portion are provided with locking nuts.

10. The reversible and easy-to-access ancient building reinforcement structure design method according to claim 1 is characterized in that: The ends of the vertical rod unit, the first longitudinal force transmission rod, the second longitudinal force transmission rod, the transverse force transmission rod, the first oblique support rod, the second oblique support rod, the third oblique support rod and the fourth oblique support rod are provided with slots, and intermediate connecting plates are provided in the slots.