A support-anchor composite reinforcement structure and method for rammed earth wall

Abstract

The present invention discloses a support-anchor composite reinforcement structure and method for a rammed earth wall, comprising a through-anchor structure, a patching structure and a support frame structure arranged on a site wall; the support frame structure is supported on the site wall, and the through-anchor structure penetrates through the site rammed earth wall and the support-anchor connector of the support frame structure and is fixedly connected; the patching structure injects a gap grouting body into the gap of the site wall, and adobe brick masonry is built on the missing part of the site rammed earth wall to achieve composite reinforcement of the site rammed earth wall. The present invention is a composite reinforcement structure that integrates anchoring, patching and supporting technologies, and solves the local and overall stability problems caused by longitudinal cracks and foundation erosion diseases in earthen sites. Under the premise of meeting the principles of cultural relics protection, the local safety of the site is improved, stress concentration is alleviated, and the overall stability and anti-overturning ability of the wall are greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of rammed earth building reinforcement and protection, and in particular relates to a support and anchoring composite reinforcement structure and method. Background Art

[0002] Ancient city walls or modern rural dwellings in my country mainly use rammed earth or stamped mud to build walls, such as the earthen walls along the Silk Road, cave dwellings in the northwest, rammed earth dwellings in Xinjiang, and earth buildings in Fujian. Among them, rammed earth city walls have both architectural and cultural attributes, while rammed earth dwellings carry exquisite folk construction technology and rich national cultural information, both of which have extremely high social and historical value.

[0003] In recent years, with the large-scale promotion and application of modern structural systems such as reinforced concrete structures and steel structures, traditional civil engineering structures have gradually faded out of people's vision. Such buildings are almost no longer newly built, and the stock has been sharply reduced year by year. Even more unfortunately, under the long-term wind, rain erosion and earthquakes, existing rammed earth buildings generally have wall deflection, crack development, foundation erosion and other damage diseases, which makes the wall very easy to collapse or overturn out of the plane under the action of horizontal earthquakes and other external forces. To address this problem, anchoring (i.e. drilling holes in the rammed earth wall and implanting anchor rods, bonding them to the wall through slurry, so that the soil on both sides of the crack is firmly tied), patching (i.e. patching adobe in the foundation erosion or local hole parts to support the upper structure load, so that the stress distribution of the wall tends to be uniform) or support (i.e. setting steel trusses, columns and other supporting structures on the outside of the wall along the direction prone to deformation and damage to limit the displacement or deformation of the structure in a certain direction) and other methods are currently used to improve the integrity and stability of the wall.

[0004] Although anchoring and patching technologies have been widely used in the reinforcement and protection of rammed earth walls, the two types of reinforcement methods have different focuses and relatively independent reinforcement technologies, making it difficult to ensure the safety and stability of the wall to the greatest extent. The main shortcomings are reflected in the following aspects:

[0005] 1. The traditional full-length bonding anchoring system mainly deals with the local stability problem of the site caused by the development of longitudinal cracks. However, the cement paste is in direct contact with the soil and anchor rods, which may cause adverse chemical reactions with the site soil, change the original properties of the soil, and is not convenient for regular repairs. It is difficult to meet the reversibility principle of the protection of rammed earth walls of the site;

[0006] 2. Reinforcement by patchwork can only partially support or fill the existing erosion or holes in the wall, reduce the local stress concentration, and avoid local cracking or collapse damage. However, the overall stability and anti-overturning capacity of the wall after reinforcement are not greatly improved. It is difficult to ensure that the wall will not be overturned as a whole, slide down, or suffer other damages under the action of horizontal external forces such as earthquakes.

[0007] 3. Anchoring mainly improves the integrity of the wall itself, while patching mainly improves the stress distribution and local stability of the wall. The two have different focuses, but the safety of the wall under the action of external force is determined by its own integrity and its ability to resist collapse or overturning. It is difficult to ensure the safety of the rammed earth wall by using only a single method. Summary of the invention

[0008] In order to solve the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a composite reinforcement structure with integrated anchoring, patching and supporting technologies, which can comprehensively solve the local and overall stability problems caused by the longitudinal cracks and foundation erosion of earthen ruins. Under the premise of meeting the principles of cultural relics protection, the local safety of the ruins is improved, stress concentration is relieved, and the overall stability and anti-overturning ability of the wall are greatly improved.

[0009] The present invention is achieved through the following technical solutions.

[0010] A support-anchor composite reinforcement structure for a rammed earth wall, comprising a through-anchor structure, a patchwork structure and a support frame structure arranged on the ruins wall;

[0011] The support frame structure is supported on the rammed earth wall of the ruins; the through-anchor structure penetrates the support-anchor connector of the rammed earth wall of the ruins and the support frame structure and is fixedly connected; the patching structure injects the void grouting body into the gap of the rammed earth wall of the ruins, and patches the missing parts of the rammed earth wall of the ruins with adobe brick masonry to achieve composite reinforcement of the rammed earth wall of the ruins.

[0012] For the above technical solution, the present invention has a further preferred solution:

[0013] Preferably, the through-anchor structure comprises a steel anchor rod, a sleeve and an anchor plate; the steel anchor rod is covered with a sleeve, the steel anchor rod and the sleeve penetrate the rammed earth wall of the earthen site, and are fastened and connected by anchor plates and bolts; the outside of the sleeve is bonded to the rammed earth wall of the site by modified mud.

[0014] Preferably, the installation direction of the through-anchor structure is parallel to the ground, obliquely downward or obliquely upward; when it is obliquely downward, the angle is not greater than 30° and not less than 10°, and when it is obliquely upward, the angle is not greater than 70° and not less than 30°.

[0015] Preferably, the patching structure comprises adobe brickwork, a ground cushion layer and a void grouting body, and the ground cushion layer is laid 10 to 20 cm below the ground.

[0016] Preferably, the support frame structure includes a support foundation, a support frame and a support-anchor connector; the support foundation is buried on the side of the rammed earth wall of the ruins facing away from the display surface, the support foundation is connected to the support frame, and one end of the support frame is connected to the support-anchor connector fixed on the rammed earth wall of the ruins.

[0017] Preferably, the supporting foundation is composed of H-shaped steel and outer concrete, and the supporting foundation is buried in the excavation area.

[0018] Preferably, the support-anchor connector includes a steel plate vertically arranged between the rammed earth walls of the ruins, and the gap between the steel plate and the rammed earth walls of the ruins is filled with semi-rigid pads; anchor holes are opened on the steel plate, and a number of vertical poles and transverse stiffening ribs are distributed at intervals on the steel plate.

[0019] Preferably, the support frame is a statically determinate truss composed of multiple steel rods, including an upper chord, a lower chord and a web. The web is connected between the upper chord and the lower chord in the form of a diagonal rod, and the ends of the upper chord, the lower chord and the web are respectively connected to the supporting foundation and the support-anchor connector.

[0020] Preferably, the cross-section of the steel rod is circular, H-shaped, or two angle steels are combined back to back into an X-shape.

[0021] The present invention also provides a support-anchor composite reinforcement method for a rammed earth wall, including three situations:

[0022] For the damaged rammed earth walls without wide cracks or obvious erosion areas, a through-anchor structure is horizontally set on the rammed earth walls of the ruins, and the steel anchor rods are arranged in a plum blossom shape along the rammed earth walls of the ruins;

[0023] For the rammed earth walls of the ruins with longitudinal cracks but no obvious foundation erosion, a through-anchor structure is set diagonally downward from the side of the support frame on the side facing the air. The setting range of the steel anchor rod is slightly larger than the cracking area of ​​the longitudinal cracks. Before the steel anchor rod is installed, the cracked part should be grout-sealed in all directions. Wooden wedges are set between the anchor plate and the oblique steel anchor rod to offset the angle difference between the two.

[0024] For the rammed earth walls of the ruins without longitudinal cracks but with obvious foundation erosion areas, a through-anchor structure is set diagonally upward from the side of the support frame facing the air on the rammed earth wall of the ruins; a staggered masonry structure is laid flat on the foundation erosion area, and then low-pressure grouting is performed on the gap between the masonry structure and the rammed earth wall of the ruins to completely seal the anchor plates and bolts exposed in the erosion area; wooden wedges are set between the anchor plates and the oblique steel bars to offset the angle difference between the two;

[0025] The width of the setting range of the steel anchor rods is the maximum width of the erosion area, and the setting height includes the middle and upper part of the erosion area and the 1 / 2 range from the top of the erosion area to the top surface of the wall; the installation angle difference of each steel anchor rod shall not exceed 10°.

[0026] The present invention adopts the above technical solution, which has the following beneficial effects:

[0027] In view of the common longitudinal cracks and foundation erosion diseases in the walls of earthen sites, the composite reinforcement technology of anchoring, patching and supporting is used comprehensively to improve the local safety of the site and relieve stress concentration, while greatly improving the overall stability and anti-overturning capacity of the wall. Through anchoring technology, through-through anchor rods are implanted in the wall to tie the soil on both sides separated by the longitudinal cracks. Nanzhu pipes with bamboo joints are set inside the site to ensure the reversibility of the reinforcement measures while solving the problem of insufficient strength due to the large difference in stiffness between the steel bars and the soil. Through patching technology, the foundation erosion parts are tamped and patched to relieve the stress concentration caused by the upper suspended soil under the action of gravity. Through supporting technology, a support frame is set on the non-display side of the wall, and the site wall is firmly connected to the back plate of the support frame through anchor rods to limit the horizontal overall displacement and deformation of the wall, and improve its overall stability and anti-overturning capacity. By comprehensively implementing the above three types of reinforcement technologies, the local and overall stability problems of the walls of earthen sites can be comprehensively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the support-anchor reinforcement structure of the ruins wall with relatively minor damage;

[0030] Figure 2 This is a schematic diagram of the support-anchor reinforcement structure of the ruins wall with longitudinal cracks;

[0031] Figure 3 This is a schematic diagram of the wall support-anchor reinforcement structure of a site with foundation erosion damage;

[0032] Figure 4 This is a schematic diagram of the repair structure of the foundation erosion area;

[0033] Figure 5 It is a schematic diagram of the through-anchor structure;

[0034] Figure 6 Schematic diagram of the support-anchor connection.

[0035] In the figure:

[0036] 1. Through-anchor structure; 101. Steel bar anchor rod; 102. Cavity; 103. Sleeve; 104. Modified mud; 105. Anchor plate; 106. Bolt;

[0037] 2. Repair structure; 201. Adobe brickwork; 202. Ground cushion; 203. Void grouting;

[0038] 3. Support frame structure; 301. Support foundation; 3011. H-shaped steel; 3012. External concrete;

[0039] 302, support frame; 3021, upper chord; 3022, lower chord; 3023, belly bar;

[0040] 303, support-anchor connector; 3031, steel plate; 3032, vertical pole; 3033, anchor hole; 3034, transverse stiffening rib;

[0041] 4. Semi-rigid pads; 5. Excavation area; 6. Rammed earth walls of the ruins; 7. Ground. DETAILED DESCRIPTION

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0043] like Figure 1 , Figure 3 As shown, the reinforcement structure includes a through-anchor structure 1, a patching structure 2 and a support frame structure 3 arranged on the rammed earth wall 6 of the ruins.

[0044] like Figure 5 As shown, the through-anchor structure 1 includes a steel anchor rod 101, a sleeve 103, a modified mud 104, an anchor plate 105 and a bolt 106; the steel anchor rod 101 is covered with a sleeve 103, the steel anchor rod 101 and the sleeve 103 penetrate the rammed earth wall 6 of the earthen site, and the anchor plates 105 are arranged on the outer side of the rammed earth wall 6 of the site and one side of the support-anchor connector 303, and are fastened and connected by bolts 106. The through-anchor structure 1 passes through the separation area of ​​the longitudinal crack 9, the steel anchor rod 101 is placed inside the sleeve 103, a centering bracket is used to make the steel bar located in the center of the sleeve, the outer side of the sleeve is bonded to the rammed earth wall 6 of the site through the modified mud 104, and a cavity 102 is left between the steel anchor rod 101 and the inner wall of the sleeve 103, which is convenient for later removal and replacement.

[0045] The sleeve 103 can be made of a bamboo tube with bamboo joints opened, or a hollow tube formed by processing wood. The strength of the modified mud 104 should be slightly higher than that of the ruins soil. The modified mud is made by mixing the scattered soil of the ruins, cement, fly ash, and glutinous rice paste with 5% silica sol, with the mass ratio of each component being 60:20:10:10 and the water-cement ratio being 0.31.

[0046] The installation direction of the through-anchor structure 1 needs to be determined according to the damage of the rammed earth wall 6 of the site. When the damage to the site is relatively minor, without wide cracks or obvious erosion areas, it can be set parallel to the ground 7; when there are longitudinal wide cracks 9 in the site, but no obvious foundation erosion, the through-anchor structure 1 can be set obliquely downward from the outside of the rammed earth wall 6 of the site to the support frame structure 3, and the anchoring angle θ can be 10 to 30°; when there is an obvious erosion area 10 at the bottom of the site, the through-anchor structure 1 can be set obliquely upward along the surface of the erosion area to the support side, and the anchoring angle φ is determined comprehensively according to the shape of the erosion area 10 and the anchoring length, but should not be greater than 70° and should not be less than 30°.

[0047] Furthermore, for the ruins rammed earth wall 6 containing longitudinal cracks 9, the modified mud 104 should first be used to seal and bond the cracks 9. It is not appropriate to use pressure grouting when grouting. It should mainly rely on gravity and the fluidity of the slurry itself to freely fill the cracks 9. In addition, multiple grouting methods can be used to increase its density.

[0048] like Figure 4 As shown, the repair structure 2 includes adobe brick masonry 201, a ground cushion layer 202 and a gap grouting body 203. Before laying the ground cushion layer 202, it is necessary to dig 10 to 20 cm from the ground, and after leveling, lay a cement or crushed stone concrete cushion layer until it is flush with the ground 7; then, the adobe brick masonry 201 is repaired according to the shape of the eroded area of ​​the original structure, and the gap between the adobe bricks and the ruins is filled with broken pieces as much as possible; finally, the gap is injected into the gap into the gap grouting body 203, and the injection is divided into multiple times along the gap, and each grouting interval is 7-14 days (that is, the slurry is completely solidified and shrunk before re-injection), until the gap is filled. Among them, the gap grouting body 203 can be made of modified mud 104, or it can be made of mud mixed with the original soil of the ruins and water.

[0049] Furthermore, the size of the adobe bricks used for patching is 30×14×7cm, and they are laid flat and staggered layer by layer. The adobe bricks can be dry-laid or bonded with modified mud 104. After the masonry is completed, the exposed part of the patching structure needs to be treated with an old surface. When grouting the gap, the grouting pipe should be extended to the gap between the patching adobe bricks and the ruins, and the gap should be filled with grout from the inside to the outside. The anchor plates and bolts exposed in the pores should be treated for durability, such as painting with anti-corrosion paint.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, the support frame structure 3 includes a support foundation 301, a support frame 302 and a support-anchor connector 303. The support foundation 301 is buried on the side facing away from the display surface of the ruins rammed earth wall 6, the support foundation 301 is connected to one end of the support frame 302, and the other end of the support frame 302 is connected to the support-anchor connector 303 fixed on the ruins rammed earth wall 6.

[0051] Among them, the supporting foundation 301 is composed of H-shaped steel 3011 and external concrete 3012. An excavation area 5 is set on one side of the wall. After compaction, the supporting foundation 301 is placed in the excavation area. The inclination angle is preset during burial, and the surface faces the supported wall. Finally, the landfill and compaction treatment is carried out. After the landfill is completed, the surface should be flush with the ground 7.

[0052] like Figure 6 As shown, the support-anchor connector 303 includes a steel plate 3031, on which anchor holes 3033 are opened, and a number of vertical poles 3032 and transverse stiffening ribs 3034 are distributed at intervals on the steel plate 3031. The hole spacing of the steel plate 3031 is not less than 35 cm, and the holes need to avoid the transverse stiffening ribs 3034 and the vertical poles 3032. The hole density can be slightly adjusted according to actual needs.

[0053] like Figures 1 to 3 As shown, the support frame 302 is composed of a plurality of steel rods to form a statically determinate truss, including an upper chord 3021, a lower chord 3022, and a web 3023. The web 3023 is connected between the upper chord 3021 and the lower chord 3022 in the form of a diagonal rod. The ends of the upper chord 3021 and the lower chord 3022 are respectively connected to the support base 301 and the support-anchor connector 303. The rods are hinged by bolts, and the cross-sectional geometry of the rods can be circular, H-shaped, or two back-to-back angle steels combined into an X-shape.

[0054] like Figure 6 Combination Figure 1 As shown, the rod of the support frame 302 is bolted to the vertical pole 3032 of the support-anchor connector 303, and the steel plate 3031 is welded and fixed to the vertical pole 3032. The end of the through-anchor structure 1 close to the support frame 302 needs to pass through the anchor hole 3033 on the steel plate and be fixed with bolts. The gap between the steel plate 3031 and the rammed earth wall of the ruins is filled with a semi-rigid pad 4 (such as a wooden pad wrapped with cotton or other soft materials).

[0055] Furthermore, the anchor hole 3033 opened on the steel plate can be circular or elliptical, with a diameter of 50-150 mm, and slightly larger than the diameter of the reinforcement body.

[0056] When a horizontal earthquake or other external forces act, the support-anchor structure will effectively limit the local and overall deformation of the wall, as follows:

[0057] (1) Walls with minor damage. In this case, the wall itself has good integrity and the stress distribution is relatively uniform. When subjected to horizontal earthquakes, the rammed earth wall of the site mainly undergoes rigid rotation around the corners on both sides of the cross section (i.e., the lower left and lower right corners of the site wall), which is prone to overall overturning damage. The reinforcement structure should be horizontally set with through-steel anchor rods on the rammed earth wall of the site, and the reinforcement range should be the entire wall. The longitudinal and transverse spacing of the steel anchor rods is 1.5-2m, and they are arranged in a plum blossom shape on the facade of the rammed earth wall of the site. One side of the anchor plate is fixed to the outside of the rammed earth wall of the site, and the other side is fixed to the outside of the support-anchor connector. The through-steel anchor structure is fixed to the support structure by bolts. In this case, no patchwork or grouting reinforcement is required.

[0058] After the reinforcement with this structure, the deformation or displacement of the wall toward the outside of the support frame under the action of an earthquake is limited by the outer anchor plate, the tensile load is transmitted by the anchor plate to the steel bars in the sleeve, and then transmitted to the steel back plate of the support frame through the anchor plate on the other side, and finally dissipated to the rigid pads buried underground through the support frame, and the load is resisted by the deadweight of the rigid pads and the pressure of the upper covering soil; while the deformation or displacement of the rammed earth wall of the site toward the inside of the support frame is mainly limited by the steel back plate of the support frame, and the compressive stress generated by the deformation of the wall is transmitted to the support frame through the steel back plate and the semi-rigid pads, and finally transmitted to the foundation soil by the rigid pads, and the load is mainly resisted by the foundation reaction force.

[0059] (2) Walls with longitudinal cracks. Such walls often have wide longitudinal cracks extending from the top of the wall downward. The soil on both sides is relatively independent, and there is a certain difference in deformation or displacement under the action of horizontal earthquakes, which may cause local compression and shear failure or overall overturning failure caused by stress concentration. For the rammed earth walls of the ruins with longitudinal cracks but no obvious foundation erosion, cross-linked steel anchor rods are set diagonally downward from the side facing the air to the side of the support frame on the rammed earth wall of the ruins. The setting range of the steel anchor rods is slightly larger than the range of the longitudinal crack area; before the installation of the steel anchor rods, the cracked parts should be grout-sealed in all directions to ensure that all steel anchor rods passing through the cracks are not in direct contact with the external environment; one side of the anchor plate is fixed to the outside of the rammed earth wall of the ruins, and the other side is fixed to the outside of the support-anchor connector. A wooden wedge is set between the anchor plate and the oblique steel bar to offset the angle difference between the two; the cross-linked anchor structure and the support frame structure are fixed and connected by bolts.

[0060] After the reinforcement is carried out using this structure, the displacement or deformation difference on both sides of the wall crack is limited by the through anchor rods. The slurry filled in the crack also bonds the soil on both sides after consolidation, and effectively alleviates the stress concentration of the soil at the tip of the crack. The anchor rods are arranged obliquely downward from the outer facade of the wall to the support frame. When subjected to external loads such as horizontal earthquakes, the axial force of the anchor rods can be decomposed into a horizontal component pointing to the support frame and a vertical component pointing vertically downward, which is used to resist the overturning moment of small blocks on one side of the crack or the deformation of the entire wall away from the support frame. In this case, the working mechanism of the present invention for limiting the overall deformation of the site wall is similar to that of the wall with less damage.

[0061] (3) Walls with foundation erosion. This type of wall has partial erosion and depression in the foundation, and the upper wall is suspended in the air. The stress state is similar to that of a cantilever beam. Both gravity and horizontal earthquake force are unfavorable loads, and the wall is prone to collapse, overturning and other damage. For the rammed earth wall of the site without longitudinal cracks but with obvious foundation erosion area, through-steel anchor rods are set obliquely upward from the side of the support frame on the side facing the air on the rammed earth wall of the site. The width of the setting range of the steel anchor rods is the maximum width of the erosion area, and the setting height should include the middle and upper part of the erosion area and the 1 / 2 range from the top of the erosion area to the top surface of the wall; the installation angle of the steel anchor rods should be determined according to the geometric shape of the erosion interface, and the difference in the installation angles of each steel anchor rod should not be greater than 10°; after the steel anchor rods are installed, the masonry structure is laid flat and staggered at the foundation erosion part, and then low-pressure grouting is performed on the gap between the masonry structure and the rammed earth wall of the site to completely seal the anchor plate and bolts exposed in the erosion area to avoid direct contact with the external environment; one side of the anchor plate is fixed to the outside of the rammed earth wall of the site, and the other side is fixed to the outside of the support-anchor connector. Wooden wedges are set between the anchor plate and the oblique steel bar to offset the angle difference between the two; the anchor structure and the support frame structure are fixed and connected by bolts.

[0062] After the reinforcement with this structure, the eroded part of the wall is filled with adobe brick masonry to support the upper suspended soil and limit its vertical downward displacement or deformation. At the same time, the grouting body filled between the repair masonry and the original wall can transfer the wall stress to the repair masonry more evenly; the anchor rods are arranged obliquely upward from the outer facade of the wall to the support frame. When subjected to external loads such as horizontal earthquakes, the axial force of the anchor rods can be decomposed into a horizontal component pointing to the support frame and a vertical component pointing vertically upward, which are used to resist the adverse loads caused by the deadweight of the suspended body and horizontal earthquakes; in this case, the working mechanism of the present invention for limiting the overall deformation of the ruins wall is similar to that of the wall with less damage.

[0063] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A support-anchor composite reinforcement method for a rammed earth wall of a ruins, characterized in that: The structure adopted in the method comprises a through-anchor structure (1), a patchwork structure (2) and a support frame structure (3) arranged on a rammed earth wall (6) of the ruins; The support frame structure (3) is supported on the ruins rammed earth wall (6); The support frame structure (3) comprises a support foundation (301), a support frame (302) and a support-anchor connection piece (303); the support foundation (301) is buried on the side of the ruins rammed earth wall (6) facing away from the display surface, the support foundation (301) is connected to the support frame (302), and one end of the support frame (302) is connected and fixed to the support-anchor connection piece (303) on the ruins rammed earth wall (6); The support-anchor connector (303) comprises a steel plate (3031) vertically arranged between the ruins rammed earth walls (6), and the gap between the steel plate (3031) and the ruins rammed earth walls (6) is filled with a semi-rigid pad (4); An anchor hole (3033) is opened on the steel plate (3031), and a plurality of vertical poles (3032) and transverse stiffening ribs (3034) are distributed at intervals on the steel plate (3031); The through-anchor structure (1) penetrates the rammed earth wall (6) of the ruins and the support-anchor connector (303) of the support frame structure (3) and is fixedly connected; The patching structure (2) injects the gap grouting body (203) into the gap of the ruins rammed earth wall (6); and patches the adobe brickwork (201) on the outside of the ruins rammed earth wall (6) to achieve composite reinforcement of the ruins rammed earth wall; The through-anchor structure (1) comprises a steel anchor rod (101), a sleeve (103) and an anchor plate (105); the steel anchor rod (101) is covered with a sleeve (103); the steel anchor rod (101) and the sleeve (103) penetrate the ruins rammed earth wall (6) and are fastened and connected by the anchor plate (105) and bolts (106); the outside of the sleeve (103) is bonded to the ruins rammed earth wall (6) by modified mud (104); The patching structure (2) comprises adobe brickwork (201), a ground cushion layer (202) and a void grouting body (203), wherein the ground cushion layer (202) is laid 10 to 20 cm below the ground; The support-anchor composite reinforcement method for the ruins rammed earth wall comprises: For a damaged ruins rammed earth wall (6) without wide cracks or obvious erosion areas, a through-anchor structure (1) is horizontally arranged on the ruins rammed earth wall (6), and steel anchor rods (101) are arranged in a plum blossom shape along the ruins rammed earth wall (6); For a site rammed earth wall (6) containing longitudinal cracks but without obvious foundation erosion areas, a through-anchor structure (1) is arranged obliquely downward from one side of the air-facing lateral support frame (302) on the site rammed earth wall (6), and the setting range of the steel anchor rod (101) is slightly larger than the longitudinal cracking area; before the steel anchor rod (101) is installed, the cracking part should be grout-sealed in all directions; a wooden wedge is arranged between the anchor plate (105) and the oblique steel anchor rod (101) to offset the angle difference between the two; For a site rammed earth wall (6) without longitudinal cracks but with obvious foundation erosion areas, a through-anchor structure (1) is set obliquely upward from one side of the air-facing lateral support frame (302) on the site rammed earth wall (6); a patching structure (2) is laid flat and staggered at the foundation erosion area, and then low-pressure grouting is performed on the gap between the patching structure (2) and the site rammed earth wall (6) to completely seal the anchor plate (105) and bolts (106) exposed in the erosion area; a wooden wedge is set between the anchor plate (105) and the oblique steel anchor rod (101) to offset the angle difference between the two; The width of the setting range of the steel anchor rod (101) is the maximum width of the erosion area, and the setting height includes the middle and upper part of the erosion area and the range from the top of the erosion area to the 1 / 2 range of the top surface of the wall; the installation angle difference of each steel anchor rod (101) is not more than 10°.

2. The support-anchoring composite reinforcement method for the rammed earth wall of a ruins according to claim 1, characterized in that: The installation direction of the through-anchor structure (1) is parallel to the ground (7), obliquely downward, or obliquely upward; when it is obliquely downward, the angle is not greater than 30° and not less than 10°, and when it is obliquely upward, the angle is not greater than 70° and not less than 30°.

3. The support-anchoring composite reinforcement method for a rammed earth wall of a ruins according to claim 1, characterized in that: The support foundation (301) is composed of H-shaped steel (3011) and outer concrete (3012), and the support foundation (301) is buried in the excavation area (5).

4. The support-anchoring composite reinforcement method for a rammed earth wall of a ruins according to claim 1, characterized in that: The support frame (302) is composed of a plurality of steel rods to form a statically determinate truss, including an upper chord (3021), a lower chord (3022) and a web (3023). The web (3023) is connected between the upper chord (3021) and the lower chord (3022) in the form of a diagonal rod. The ends of the upper chord (3021) and the lower chord (3022) are respectively connected to the support base (301) and the support-anchor connector (303).

5. The support-anchoring composite reinforcement method for the rammed earth wall of a ruins according to claim 4, characterized in that: The cross section of the steel rod is circular, H-shaped or two angle steels are combined back to back into an X shape.

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