CN214659062U - Support-anchor composite reinforcement structure of rammed earth wall - Google Patents

Abstract

The utility model discloses a support-anchor composite reinforcing structure of rammed earth wall, which comprises a pair-through anchor structure, a building-supplementing structure and a supporting frame structure which are arranged on the rammed earth wall of a site; the support frame structure is supported on the site wall, and the anchor penetrating structure penetrates through the site rammed earth wall and is fixedly connected with a support-anchor connecting piece of the support frame structure; the building repairing structure injects gaps of the site wall body into the gap grouting body, and builds the earth brick building body at the missing part of the site rammed earth wall body, so as to realize the composite reinforcement of the site rammed earth wall body. The utility model discloses a synthesize anchor, mend the composite reinforcement structure of building, support technique, solve the vertical crack of earthen site and undercut the local, the overall stability problem that arouses of disease with the basis. On the premise of meeting the cultural relic protection principle, the local safety of the site is improved, the stress concentration is relieved, and the overall stability and the anti-overturning capability of the wall are greatly improved.

Description

Support-anchor composite reinforcement structure of rammed earth wall

Technical Field

The utility model belongs to rammed earth building reinforcement protection field, in particular to support, anchor pull composite reinforcement structure.

Background

Ancient city walls or modern rural residences in China mainly adopt rammed earth or rammed mud to build walls, such as city walls of earthen sites along silk roads, northwest cave dwellings, Xinjiang rammed earth residences, Fujian earth buildings and the like. The rammed-earth city wall has the dual attributes of buildings and cultural relics, and the rammed-earth folk house bears exquisite folk construction technology and rich folk culture information and has extremely high social value and historical value.

In recent years, with the large-scale popularization and application of modern structural systems such as reinforced concrete structures, steel structures and the like, the traditional civil structure buildings gradually fade the visual field of people, the buildings are hardly newly built, and the stock quantity is sharply reduced year by year. Unfortunately, the existing rammed earth buildings generally have damage diseases such as wall distortion and flash, crack development, foundation undercut and the like under the external force action of long-term wind, rain erosion, earthquake and the like, so that the wall is very easy to collapse or overturn and damage out of the plane under the external force action of horizontal earthquake and the like. In order to solve the problem, the integrity and stability of the wall are generally improved by means of anchoring (namely, drilling a hole in a rammed earth wall, implanting an anchor rod, and bonding the anchor rod with the wall through slurry, so that soil bodies on two sides of a crack are firmly tied up), patching (namely, patching a soil blank at a foundation undercut or local hole part, and supporting an upper structure load, so that the stress distribution of the wall tends to be uniform) or supporting (namely, a steel truss, a stand column and other supporting structures are arranged outside the wall along a direction in which deformation and damage easily occur, and displacement or deformation of the structure along a certain direction is limited).

Although the current anchoring and repairing technology is widely applied to reinforcement protection of rammed earth walls, the two types of reinforcement methods have different emphasis points, and the reinforcement technology is relatively independent, so that the safety and stability of the walls are difficult to ensure to the greatest extent, and the main defects are reflected in the following aspects:

1. the traditional full-length bonding type anchoring system mainly solves the problem of local stability of the site caused by the development of longitudinal cracks, but cement slurry in the traditional full-length bonding type anchoring system is in direct contact with a soil body and an anchor rod, can generate adverse chemical reaction with the soil body of the site, changes the original property of the soil body, is inconvenient for regular repair and is difficult to meet the reversibility principle of protecting the rammed soil wall body of the site;

2. the repair reinforcement can only locally support or fill the existing undercut or hole part of the wall body, so that the local stress concentration degree is reduced, and the damage of local cracking or collapse is avoided;

3. the anchoring mainly improves the integrity of the wall body, the repairing mainly improves the stress distribution and the local stability of the wall body, the two key points are different, but the safety of the wall body under the action of external force is comprehensively determined by the integrity and the collapse resistance or the overturn resistance of the wall body, and the safety of the rammed earth wall body is difficult to ensure only by adopting a single method.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned defect that exists among the prior art, the utility model aims to provide a compound reinforced structure who synthesizes anchor, mend step, support technique, solve the vertical crack of earthen site and the basis local, the overall stability problem of undercutting the arousing of disease synthetically. On the premise of meeting the cultural relic protection principle, the local safety of the site is improved, the stress concentration is relieved, and the overall stability and the anti-overturning capability of the wall are greatly improved.

The utility model discloses a realize through following technical scheme.

A support-anchor composite reinforcing structure of a rammed earth wall comprises a penetrating anchor structure, a building supplementing structure and a support frame structure which are arranged on the rammed earth wall of a site;

the support frame structure is supported on the site rammed earth wall; the opposite-penetrating anchoring structure penetrates through the site rammed earth wall body and the support-anchor connecting piece of the support frame structure and is fixedly connected with the support-anchor connecting piece; the building repairing structure injects gaps of the site rammed earth wall into the gap grouting body, and builds adobe brick building bodies at the missing parts of the site rammed earth wall, so as to realize the composite reinforcement of the site rammed earth wall.

To above-mentioned technical scheme, the utility model discloses still further preferred scheme:

preferably, the opposite-penetrating anchoring structure comprises a steel bar anchor rod, a sleeve and an anchor plate; the sleeve is sleeved outside the steel bar anchor rod, and the steel bar anchor rod and the sleeve penetrate through the earthen site rammed earth wall body and are fixedly connected through the anchor plate and the bolt; the outside of the sleeve is bonded with the site rammed earth wall body through modified slurry.

Preferably, the installation direction of the opposite-penetrating anchoring structure is parallel to the ground, obliquely downward or obliquely upward; the angle is not more than 30 degrees and not less than 10 degrees when the inclined downward setting is carried out, and the angle is not more than 70 degrees and not less than 30 degrees when the inclined upward setting is carried out.

Preferably, the building repair structure comprises an adobe brick masonry, a ground cushion layer and a gap grouting body, wherein the ground cushion layer is laid at a position 10-20 cm below the ground.

Preferably, the bracing structure comprises a bracing base, a bracing frame and a bracing-anchor connection; the support foundation is buried in one side of the site rammed earth wall body, which is opposite to the display surface, the support foundation is connected with the support frame, and one end of the support frame is connected with the support-anchor connecting piece fixed on the site rammed earth wall body.

Preferably, the supporting foundation is composed of H-shaped steel and outer-coated concrete, and the supporting foundation is embedded in the excavation area.

Preferably, the support-anchor connecting piece comprises a steel plate vertically arranged between the site rammed earth walls, and a gap between the steel plate and the site rammed earth walls is filled by a semi-rigid cushion block; the steel plate is provided with anchor holes, and the steel plate is provided with a plurality of vertical upright posts and transverse stiffening ribs at intervals.

Preferably, the support frame comprises a static truss consisting of a plurality of steel members, and comprises an upper chord member, a lower chord member and a web member, wherein the web member is connected between the upper chord member and the lower chord member in a diagonal drawing rod shape, and two ends of the upper chord member, the lower chord member and the web member are respectively connected to the support foundation and the support-anchor connecting member.

Preferably, the section of the steel rod piece is circular, H-shaped or X-shaped formed by combining two angle steels back to back.

The utility model discloses owing to take above technical scheme, it has following beneficial effect:

aiming at longitudinal cracks and foundation erosion diseases commonly existing in the rammed earth wall body of the earthen site, the anchoring, repairing and supporting composite reinforcing technology is comprehensively applied, the local safety of the earthen site is improved, stress concentration is relieved, and meanwhile the overall stability and the anti-overturning capacity of the wall body are greatly improved. Through an anchoring technology, a through anchor rod penetrating through cracks is implanted into a wall body, soil bodies on two sides of the longitudinal cracks are tied, and bamboo tubes penetrating through bamboo joints are arranged in the relics, so that the problem that strength is difficult to give full play due to too large rigidity difference of reinforcing steel bars and the soil bodies is solved while the reversibility of a reinforcing measure is ensured; tamping and repairing are carried out on the foundation excavation part through a repairing and building technology, so that the problem of stress concentration caused by the suspended soil body on the upper part under the action of gravity is relieved; through the support technology, set up the support frame at the wall body non-show side, firmly be connected site rammed earth wall body and support frame backplate through the stock, the level of restriction wall body is to whole displacement and deformation, promotes its overall stability and antidumping ability. By comprehensively implementing the three types of reinforcement technologies, the problems of local and overall stability of the earthen site rammed earth wall can be comprehensively solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:

FIG. 1 is a schematic view of a supporting-anchoring reinforcing structure of a rammed earth wall of a site with light damage;

FIG. 2 is a schematic diagram of a supporting-anchoring reinforcing structure of a rammed earth wall of a site containing longitudinal crack diseases;

FIG. 3 is a schematic view of a supporting-anchoring reinforcing structure of a site rammed earth wall containing a foundation undercut defect;

FIG. 4 is a schematic view of a repair-built structure of a basic undercut portion;

FIG. 5 is a schematic view of a split anchor configuration;

figure 6 is a schematic view of a strut-anchor connection.

In the figure:

1. a penetrating anchor structure; 101. a steel bar anchor rod; 102. a cavity; 103. a sleeve; 104. modifying the slurry; 105. an anchor plate; 106. a bolt;

2. building a structure; 201. adobe brick masonry; 202. a ground cushion layer; 203. gap grouting;

3. a support frame structure; 301. supporting a foundation; 3011. h-shaped steel; 3012. concrete is coated outside;

302. a support frame; 3021. an upper chord; 3022. a lower chord; 3023. a web member;

303. a strut-anchor connection; 3031. a steel plate; 3032. a vertical upright rod; 3033. an anchor eye; 3034. a transverse stiffener;

4. a semi-rigid cushion block; 5. excavating an area; 6. ramming a soil wall body in the site; 7. and (4) the ground.

Detailed Description

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.

As shown in fig. 1 and 3, the reinforced structure comprises a penetrating anchoring structure 1, a patching structure 2 and a supporting frame structure 3 which are arranged on a site rammed earth wall 6.

As shown in fig. 5, the through anchor structure 1 includes a steel bar anchor rod 101, a sleeve 103, a modified slurry 104, an anchor plate 105 and a bolt 106; the sleeve 103 is sleeved outside the steel bar anchor rod 101, the steel bar anchor rod 101 and the sleeve 103 penetrate through the earthen site rammed earth wall 6, and the anchor plates 105 are arranged on the outer side of the earthen site rammed earth wall 6 and one side of the support-anchor connecting piece 303 and are fixedly connected through the bolts 106. This to penetrating anchor structure 1 passes the partition region of vertical crack 9, and inside reinforcing bar stock 101 placed sleeve 103, adopt the centering support to make the reinforcing bar be located sleeve center, and the sleeve outside is through modified mud 104 and the bonding of site rammed earth wall 6, and reinforcing bar stock 101 leaves cavity 102 with sleeve 103 inner wall, and the later stage of being convenient for is demolishd and is changed.

The sleeve 103 can be made of bamboo pipes with bamboo joints or hollow pipes formed by processing wood. The strength of the modified slurry 104 is slightly higher than that of the soil body of the site, the modified slurry is prepared by mixing the site scattered soil, cement, fly ash and glutinous rice slurry with 5% of silica sol, and the mass ratio of each component is 60: 20: 10: 10, water-cement ratio 0.31.

The installation direction of the through anchor structure 1 is determined according to the damage condition of the site rammed earth wall 6, and when the site damage is slight and no wide crack or obvious undercut area exists, the through anchor structure can be arranged parallel to the ground 7; when the site has longitudinal wide cracks 9 but no obvious foundation undercut, the opposite-penetrating anchoring structure 1 can be obliquely and downwards arranged from the outer side of the site ramming earth wall 6 to the side of the support frame structure 3, and the anchoring angle theta can be 10-30 degrees; when the obvious underetching area 10 exists at the bottom of the site, the opposite-penetrating anchoring structure 1 can be obliquely and upwards arranged towards the side of the bracket along the surface of the underetching area, and the anchoring angle phi is comprehensively determined according to the shape and the anchoring length of the underetching area 10, but is not suitable to be larger than 70 degrees and not smaller than 30 degrees.

Furthermore, for the site rammed earth wall 6 containing the longitudinal cracks 9, firstly, modified slurry 104 is adopted to block and bond the cracks 9, a pressure grouting mode is not suitable for grouting, and the cracks 9 are freely filled by mainly depending on gravity and the self-fluidity of the slurry; in addition, multiple grouting methods can be adopted to increase the compactness of the concrete.

As shown in fig. 4, the masonry structure 2 comprises a body of adobe bricks 201, a ground mat 202 and a void grout 203. Before the ground cushion layer 202 is laid, 10-20 cm of the ground is dug, and after leveling, a cement or gravel concrete cushion layer is laid until the cement or gravel concrete cushion layer is flush with the ground 7; then, building a adobe brick masonry 201 according to the shape of the original structure undercut area, and filling up the gap between the adobe brick and the site with fragments as much as possible; and finally, injecting the gap grouting body 203 into the gap for multiple times along the gap, wherein the interval between every two times of grouting is 7-14 days (namely, the grouting is carried out again after the grout is completely solidified and shrunk) until the gap is filled. The gap grouting body 203 can be made of modified slurry 104 or slurry obtained by mixing original site soil and water.

Furthermore, the size of adobe bricks used for building is 30 multiplied by 14 multiplied by 7cm, the adobe bricks can be laid flatly and staggered and built layer by layer, the adobe bricks can be laid dry or can be bonded by modified slurry 104, and the surface of the exposed part of the building structure needs to be subjected to ageing treatment after building is completed. When the gap is grouted, the grouting pipe extends to the gap between the masonry adobe brick and the site, and the gap is filled by sequentially grouting from inside to outside. The anchor plate and the bolt leaking from the pore should be subjected to durability treatment, such as painting anti-corrosion paint.

As shown in fig. 1, 2 and 3, the supporting frame structure 3 includes a supporting base 301, a supporting frame 302 and a strut-anchor connector 303. The supporting base 301 is embedded at one side of the display surface of the earthen rammed wall 6 facing away from the site, the supporting base 301 is connected with one end of the supporting frame 302, and the other end of the supporting frame 302 is connected with the supporting-anchoring connecting piece 303 fixed on the earthen rammed wall 6 of the site.

The supporting foundation 301 is composed of H-shaped steel 3011 and outer concrete 3012, an excavation area 5 is arranged on one side of the wall, the supporting foundation 301 is placed in the excavation area after tamping, an inclination angle is preset during burying, the surface faces to the supported wall, finally, landfill tamping treatment is carried out, and the surface is flush with the ground 7 after landfill is finished.

As shown in fig. 6, the support-anchor connector 303 includes a steel plate 3031, an anchor hole 3033 is formed in the steel plate 3031, a plurality of vertical support rods 3032 and transverse stiffening ribs 3034 are distributed on the steel plate 3031 at intervals, the distance between the open holes of the steel plate 3031 is not less than 35cm, the open holes need to avoid the transverse stiffening ribs 3034 and the vertical support rods 3032, and the open hole density can be adjusted slightly according to actual requirements.

As shown in fig. 1 to 3, the supporting frame 302 is a static truss composed of a plurality of steel members, and includes 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 a diagonal drawing rod shape, and two ends of the upper chord 3021 and the lower chord 3022 are respectively connected to the supporting base 301 and the supporting-anchoring connector 303. The rod pieces are hinged through bolts, and the geometric shapes of the cross sections of the rod pieces can be circular, H-shaped or X-shaped by combining two angle steels back to back.

As shown in fig. 6 in combination with fig. 1, the rod of the support frame 302 is bolted to the vertical upright 3032 of the support-anchor connector 303, and the steel plate 3031 is welded to the vertical upright 3032. One end of the penetrating anchoring structure 1, which is close to the support frame 302, needs to penetrate through an anchoring hole 3033 on the steel plate and is fixed by a bolt, and a gap between the steel plate 3031 and the site rammed earth wall is filled by a semi-rigid cushion block 4 (such as a wood cushion block wrapped by cotton or other soft materials).

Furthermore, the anchor hole 3033 formed on the steel plate can be round or oval, the diameter is 50-150mm, and the diameter is slightly larger than the diameter of the tendon body.

When a horizontal earthquake or other external force acts, the supporting-anchoring structure can effectively limit the local and overall deformation of the wall body, and the following steps are carried out:

(1) and the wall body with light damage. Under the condition, the wall body has better integrity and more uniform stress distribution, and when the horizontal earthquake acts, the site rammed earth wall body mainly generates rigid rotation around angular points at two sides of the cross section (namely the lower left corner and the lower right corner of the site rammed earth wall body), so that the integral overturning damage is easy to generate; the reinforcing structure is characterized in that a through steel bar anchor rod is horizontally arranged on the site rammed earth wall, and the reinforcing range is the whole wall. The longitudinal and transverse spacing of the steel bar anchor rods is 1.5-2m, and the vertical surfaces of the rammed earth walls in the site are arranged in a quincunx shape; one side of the anchor plate is fixed outside the site rammed earth wall, and the other side of the anchor plate is fixed outside the support-anchor connecting piece; the opposite-penetrating anchoring structure is fixedly connected with the supporting structure through bolts. In such cases, no additional masonry or grouting reinforcement is required.

After the structure of the utility model is reinforced, the deformation or displacement of the wall body towards the outside of the supporting frame under the earthquake action is limited by the outside anchor plate, the drawing load is transmitted to the steel bar in the sleeve by the anchor plate, then transmitted to the steel back plate of the supporting frame by the anchor plate at the other side, and finally dissipated in the rigid cushion block buried underground by the supporting frame, and the load is resisted by the dead weight of the rigid cushion block and the upper soil covering pressure together; deformation or displacement of the site rammed earth wall body towards the inner side of the support frame is mainly limited by the steel back plate of the support frame, compressive stress generated by deformation of the wall body is transmitted to the support frame through the steel back plate and the semi-rigid cushion block and finally transmitted to foundation soil through the rigid cushion block, and load is mainly resisted by foundation counter-force.

(2) The wall body contains longitudinal cracks. The wall body mostly has longitudinal wide cracks extending downwards from the wall top, soil bodies on two sides of the wall body are relatively independent, deformation or displacement has certain difference under the action of a horizontal earthquake, and local compression, shearing damage or integral overturning damage caused by stress concentration can be caused. For the site rammed earth wall which contains longitudinal cracks and has no obvious foundation undercut, a counter-penetrating steel bar anchor rod is obliquely arranged downwards from the side close to the empty side to one side of the support frame on the site rammed earth wall, and the setting range of the steel bar anchor rod is slightly larger than the range of a longitudinal cracking area; the crack part is subjected to all-dimensional grouting sealing protection before the reinforcing steel bar anchor rod is installed, and all the reinforcing steel bar anchor rods penetrating through the crack are ensured not to be in direct contact with the external environment; one side of the anchor plate is fixed outside the site rammed earth wall, the other side of the anchor plate is fixed outside the support-anchor connecting piece, and the angle difference between the anchor plate and the oblique steel bar is offset by arranging a wood wedge block between the anchor plate and the oblique steel bar; the opposite-penetrating anchoring structure is fixedly connected with the supporting frame structure through bolts.

After the structure of the utility model is reinforced, the displacement or deformation difference of the two sides of the wall crack is limited by the opposite penetration anchor rod, the slurry filled in the crack is solidified to bond the soil bodies on the two sides, and simultaneously, the stress concentration of the soil body at the part of the crack tip is effectively relieved; the anchor rod adopts a downward inclined arrangement mode from the outer vertical surface of the wall body to the support frame, when the anchor rod is acted by external loads such as horizontal earthquake and the like, the axial force of the anchor rod can be decomposed into a horizontal component and a vertical downward vertical component which point to the support frame, and the anchor rod is used for resisting the overturning moment of the small block body at one side of the crack or the whole wall body deforming to one side deviating from the support frame; under the condition, the utility model discloses whole deformation restriction operating mechanism to site ramming earth wall body is similar with the lighter wall body of damage.

(3) Including foundation undercut walls. The wall foundation has the condition of partial undercut and recess, the upper wall body is suspended, the stress state is similar to that of a cantilever beam, both gravity and horizontal earthquake force are unfavorable loads, and the wall body is easy to collapse, topple and the like. For a site rammed earth wall which does not contain longitudinal cracks and has an obvious foundation undermining area, diagonally upward penetrating steel bar anchor rods are arranged on the site rammed earth wall from an adjacent empty side to one side of the support frame, the width of the steel bar anchor rods is the maximum width of an undermining area, and the set height of the steel bar anchor rods comprises the middle upper part of the undermining area and the 1/2 range from the top of the undermining area to the top surface of the wall; the installation angle of the steel bar anchor rod is determined according to the geometric form of the undercut interface, and the difference of the installation angle of each steel bar anchor rod is not more than 10 degrees; after the reinforcing steel bar anchor rod is installed, laying staggered joint masonry and repair building structures at the undercut part of the foundation, then performing low-pressure grouting on the gap part between the repair building structures and the site rammed earth wall, and completely sealing and protecting the exposed anchor plate, bolt and the like in the undercut area to avoid direct contact with the external environment; one side of the anchor plate is fixed outside the site rammed earth wall, the other side of the anchor plate is fixed outside the support-anchor connecting piece, and the angle difference between the anchor plate and the oblique steel bar is offset by arranging a wood wedge block between the anchor plate and the oblique steel bar; the anchor structure is fixedly connected with the supporting frame structure through bolts.

After the structure of the utility model is reinforced, the wall body undercut part is filled by the adobe brick masonry body, which is used for supporting the upper suspended soil body, limiting the displacement or deformation of the upper suspended soil body along the vertical direction, and the grouting body filled between the repair masonry body and the original wall body can more uniformly transmit the wall body stress to the repair masonry body; the anchor rod adopts a mode of obliquely upwards arranging from the outer vertical surface of the wall body to the support frame, when the anchor rod is acted by external loads such as horizontal earthquake and the like, the axial force of the anchor rod can be decomposed into a horizontal component and a vertical component which point to the support frame and are vertically upwards used for resisting the dead weight of the suspended body and the adverse load caused by the horizontal earthquake; under the condition, the utility model discloses whole deformation restriction operating mechanism to site ramming earth wall body is similar with the lighter wall body of damage.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and deformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and deformations are all within the protection scope of the present invention.

Claims (10)

1. A support-anchor composite reinforcing structure of a rammed earth wall is characterized by comprising a pair-penetrating anchor structure (1), a building-supplementing structure (2) and a supporting frame structure (3) which are arranged on a rammed earth wall (6) of a site;

the support frame structure (3) is supported on a site rammed earth wall (6); the pair-penetrating anchor structure (1) penetrates through a support-anchor connecting piece (303) of the site ramming wall body (6) and the support frame structure (3) and is fixedly connected with the support-anchor connecting piece; the building repairing structure (2) injects gaps of the site rammed earth wall (6) into the gap grouting body (203), and builds adobe brick building bodies (201) on the outer side of the site rammed earth wall (6) to realize the composite reinforcement of the site rammed earth wall.

2. The supporting-anchoring composite reinforcing structure for rammed earth wall according to claim 1, wherein the through-anchoring structure (1) comprises a steel bar anchor rod (101), a sleeve (103) and an anchor plate (105); a sleeve (103) is sleeved outside the steel bar anchor rod (101), the steel bar anchor rod (101) and the sleeve (103) penetrate through the earthen site rammed earth wall body (6) and are fixedly connected with each other through an anchor plate (105) and a bolt (106); the exterior of the sleeve is bonded with the site rammed earth wall (6) through modified mud (104).

3. The supporting-anchoring composite reinforcing structure for rammed earth wall according to claim 1, wherein the installation direction of the penetrating anchoring structure (1) is parallel to the ground (7), obliquely downward or obliquely upward; the angle is not more than 30 degrees and not less than 10 degrees when the inclined downward setting is carried out, and the angle is not more than 70 degrees and not less than 30 degrees when the inclined upward setting is carried out.

4. The support-anchor composite reinforcement structure for rammed earth walls according to claim 1, wherein the masonry structure (2) comprises adobe brick masonry (201), a ground cushion layer (202) and a gap grouting body (203), and the ground cushion layer (202) is laid 10-20 cm below the ground.

5. The bracing-anchoring composite reinforcement structure for a rammed earth wall according to claim 1, wherein the supporting frame structure (3) comprises a supporting foundation (301), a supporting frame (302) and a bracing-anchoring connecting member (303); the supporting foundation (301) is buried at one side of the site rammed earth wall (6) back to the display surface, the supporting foundation (301) is connected with the supporting frame (302), and one end of the supporting frame (302) is connected and fixed on the supporting-anchoring connecting piece (303) on the site rammed earth wall (6).

6. The supporting-anchoring composite reinforcing structure for rammed earth wall according to claim 5, wherein the supporting foundation (301) is composed of H-shaped steel (3011) and outer-coated concrete (3012), and the supporting foundation (301) is buried in the excavated area.

7. The support-anchor composite reinforcement structure of the rammed earth wall according to claim 5, wherein the support-anchor connecting piece (303) comprises a steel plate (3031) vertically arranged between the site rammed earth walls (6), and a gap between the steel plate (3031) and the site rammed earth walls (6) is filled with the semi-rigid cushion block (4).

8. The supporting-anchoring composite reinforcing structure of the rammed earth wall body according to claim 7, wherein an anchor hole (3033) is formed in the steel plate (3031), and a plurality of vertical rods (3032) and transverse stiffening ribs (3034) are distributed on the steel plate (3031) at intervals.

9. The structure of claim 5, wherein the supporting frame (302) is a static truss formed by a plurality of steel members, and comprises an upper chord (3021), a lower chord (3022) and a web member (3023), the web member (3023) is connected between the upper chord (3021) and the lower chord (3022) in a diagonal manner, and the two ends of the upper chord (3021) and the lower chord (3022) are respectively connected to the supporting foundation (301) and the supporting-anchoring connector (303).

10. The structure of claim 9, wherein the steel bar has a circular cross-section, an H-shape, or an X-shape combined by two back-to-back angles.

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