Slope supporting device for rock-soil foundation pit construction

Abstract

The invention relates to a rock-soil foundation pit construction side slope supporting device, and relates to the technical field of rock-soil construction, the rock-soil foundation pit construction side slope supporting device comprises a protective plate, a carrying plate is fixedly connected to the bottom of one side of the protective plate, a communicating assembly is arranged at the bottom of the protective plate in a penetrating mode, and the position of the communicating assembly corresponds to the position of the carrying plate; a first supporting plate and a second supporting plate are arranged on the other side of the protection plate, the first supporting plate is arranged below the second supporting plate, and a first supporting mechanism is connected to the first supporting plate. The multiple connecting rods are arranged in the first supporting mechanism, the acting force transmitted at the supporting point position can be effectively dispersed, deformation of the supporting rods caused by too large slope toe stress is avoided, the second supporting mechanism on the upper portion abuts against the second supporting plate and the protection plate at the same time, and the supporting beam is matched with connection of the auxiliary mechanism; and the overall section bearing performance of the second supporting mechanism is improved, deformation caused by radial force generated by unbalanced bending moment is avoided, and the stability of supporting the protection plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rock and soil construction, and in particular to a rock and soil foundation pit construction slope supporting device. Background Art

[0002] With the acceleration of urbanization and the continuous advancement of infrastructure construction, a large number of high-rise buildings, underground parking lots, subway stations, tunnels and other projects have emerged. These projects often require deep foundation pit excavation to meet the requirements of building foundation burial depth and underground space utilization. Geotechnical foundation pit engineering, as a key technology to ensure the safety of underground engineering construction and the stability of the surrounding environment, has received widespread attention and rapid development.

[0003] Among them, in order to ensure the stability of the foundation pit slope and control the deformation of the surrounding strata, various support structures need to be adopted. Directly using soil nail walls or anchor piles for support is greatly restricted by the soil body. Relying only on the friction between the soil body and the soil nails and the shear strength of the soil body itself is likely to cause insufficient pull-out resistance, and the displacement control ability of the slope is weak. When using underground continuous walls for support, when there is abundant groundwater around the foundation pit, water accumulation behind the wall and saturation and softening of the soil body are likely to occur. The lateral pressure of the wall on the stress concentration area at the foot of the slope is greatly increased, which is easy to cause chain damage and reduce the stability of the support structure, affecting the internal working environment of the foundation pit. In view of this, the present application proposes a slope support device for rock and soil foundation pit construction. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a slope support device for rock and soil foundation pit construction, so as to solve the problem that the displacement control ability of the slope is weak due to the influence of soil quality in the prior art, and the soil softening is easy to occur due to groundwater infiltration, and the lateral pressure on the support structure is greatly increased and easily exceeds the bearing range.

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

[0006] A slope support device for rock and soil foundation pit construction, comprising a guard plate, a carrier plate is fixedly connected to the bottom of one side of the guard plate, a connecting component is penetrated through the bottom of the guard plate, and the position of the connecting component corresponds to the position of the carrier plate;

[0007] A first support plate and a second support plate are respectively provided on the other side of the guard plate, and the first support plate is arranged below the second support plate, a first supporting mechanism is connected to the first support plate, an auxiliary mechanism is connected to the second support plate, an end of the auxiliary mechanism away from the second support plate is connected to the second supporting mechanism, and the second supporting mechanism and an end of the first supporting mechanism away from the guard plate are commonly connected to a fixing frame.

[0008] Furthermore, both sides of the guard plate are provided with splicing grooves, and the two splicing grooves are respectively provided on opposite side walls of the guard plate;

[0009] The guard plate has two symmetrically arranged side walls on one side where the first support plate and the second support plate are installed, and a plurality of positioning blocks are arranged in both of the two limit grooves, and the plurality of positioning blocks are arc-shaped protrusions, and the plurality of positioning blocks are arranged equidistantly;

[0010] Matching blocks are arranged in both limiting grooves, and the height of the matching blocks is equal to the depth of the limiting grooves. A groove is opened on the side wall of the matching block corresponding to the inner wall of the limiting groove, and the diameter of the groove is equal to the diameter of the positioning block.

[0011] Furthermore, the carrier plate is designed to be corrugated, and the portion of the carrier plate located in the middle of the guard plate is higher than the two ends of the carrier plate;

[0012] The carrier plate is arranged obliquely, and one end of the carrier plate away from the guard plate is higher than the connection between the carrier plate and the guard plate.

[0013] Furthermore, the communication component includes a plurality of through slots formed on the guard plate, and the plurality of through slots are formed above the connection between the carrier plate and the guard plate respectively;

[0014] The ends of the plurality of through grooves are all provided with connecting pipes, and the plurality of connecting pipes are all fixedly connected to the side wall of the guard plate, and the plurality of connecting pipes and the inner wall of the through grooves are jointly provided with spiral grooves.

[0015] Furthermore, one side wall of the first support plate is fixedly connected to the side walls of the two positioning blocks located below, and the other side of the first support plate is symmetrically provided with two fixing seats;

[0016] A plurality of first reinforcing plates are respectively fixedly connected to two ends of a side wall of the first support plate away from the guard plate.

[0017] Furthermore, an extension plate is vertically arranged in the middle of the second support plate, and the extension plate and the second support plate are connected together with an annular seat;

[0018] Two ends of the side wall of the second support plate away from the guard plate are respectively fixedly connected with a plurality of second reinforcing plates;

[0019] The side wall of the second support plate is fixedly connected to the side walls of the two positioning blocks located above.

[0020] Furthermore, the first supporting mechanism comprises two supporting rods symmetrically arranged, one end of the two supporting rods is respectively fixedly connected to the fixing seats corresponding to the positions, and the other ends of the two supporting rods are commonly connected to the connecting seat;

[0021] A plurality of connecting rods are commonly connected between the two support rods, and the plurality of connecting rods are all arc-shaped rods, and the plurality of connecting rods are staggered and penetrated.

[0022] Further, the second supporting mechanism comprises a supporting beam, an end of the supporting beam close to the guard plate is a first end, an end of the supporting beam away from the guard plate is a second end, the first end of the supporting beam is fixedly connected with an abutment plate, the abutment plate is set as a circular plate, and the diameter of the abutment plate is equal to the inner diameter of the annular seat;

[0023] The first end of the support beam is fixedly connected to the top plate;

[0024] The support beam adopts a hollow structure, and a plurality of partitions are arranged inside the support beam, and the distance between adjacent partitions increases gradually from the first end to the second end of the support beam.

[0025] Furthermore, the auxiliary mechanism includes a plurality of auxiliary rods, one end of each of the plurality of auxiliary rods is commonly connected to a conical seat, the conical seat is sleeved on the support beam, and the conical seat is fixedly connected to the support beam;

[0026] The other ends of the plurality of auxiliary rods are respectively provided with assembly seats, and the plurality of assembly seats are respectively fixedly connected to the side walls of the second support plate and the extension plate;

[0027] The assembly seat includes a base and a cover plate, and the base and the cover plate are detachably connected by a first bolt. The base and the cover plate are jointly provided with a mounting groove, and a shaft body is arranged in the mounting groove. One end of the shaft body extending outside the cover plate is fixedly connected to the auxiliary rod.

[0028] Furthermore, the bottom of the fixing frame is fixedly connected to a base, and the opposite side walls of the fixing frame are respectively connected to a plurality of fins, and the plurality of fins are all arranged obliquely;

[0029] A guide groove is provided on a side wall of the base close to the guard plate, and a plurality of groups of internal thread holes are provided in the guide groove, and two movable plates are installed in the internal thread holes through second bolts;

[0030] The side wall of the movable plate located at the bottom is fixedly connected to the connecting seat, and the side wall of the movable plate located at the top is fixedly connected to the top plate.

[0031] The beneficial effects of the present invention are:

[0032] The rock and soil foundation pit construction slope support device can make adjacent guard plates stably contact by setting the first support plate and the second support plate, and cooperate with the first support mechanism and the second support mechanism to support the guard plate, so as to avoid the collapse of the foundation pit slope due to the gap between the adjacent guard plates. In addition, the multiple connecting rods set in the first support mechanism can effectively disperse the force transmitted at the support point, and avoid deformation of the support rod due to excessive stress at the foot of the slope. The second support mechanism above simultaneously resists the second support plate and the guard plate, and the support beam cooperates with the connection of the auxiliary mechanism to improve the overall cross-sectional bearing capacity of the second support mechanism, avoid deformation caused by radial force generated by unbalanced bending moment, and improve the stability of supporting the guard plate.

[0033] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an isometric structural schematic diagram of the present invention;

[0035] Figure 2 It is a side view structural schematic diagram of the present invention;

[0036] Figure 3 It is a partial exploded schematic diagram of the structure of the guard plate in the present invention;

[0037] Figure 4 It is a schematic cross-sectional structural diagram of the connecting component in the present invention;

[0038] Figure 5 It is a schematic diagram of the main structure of the first supporting plate and the second supporting plate in the present invention;

[0039] Figure 6 It is a rear view structural schematic diagram of the first supporting plate and the second supporting plate in the present invention;

[0040] Figure 7 is a schematic structural diagram of the first supporting mechanism in the present invention;

[0041] Figure 8 is a schematic structural diagram of the second supporting mechanism in the present invention;

[0042] Fig. 9 It is a schematic cross-sectional structure diagram of the support beam in the present invention;

[0043] Fig.10 It is a schematic diagram of the structure explosion of the assembly seat in the present invention;

[0044] Fig.11It is a cross-sectional structural schematic diagram of the assembly seat in the present invention;

[0045] Fig.12 It is a schematic diagram of the main structure of the fixing frame in the present invention.

[0046] In the figure: 1, guard plate; 11, splicing groove; 12, limit groove; 13, positioning block; 14, matching block; 2, carrier plate; 3, connecting component; 31, through groove; 32, connecting pipe; 33, spiral groove; 4, first support plate; 41, fixed seat; 42, first reinforcing plate; 5, second support plate; 51, extension plate; 52, annular seat; 53, second reinforcing plate; 6, first supporting mechanism; 61, supporting rod; 62, connecting rod; 63, connecting rod Seat; 7, second supporting mechanism; 71, supporting beam; 72, abutting plate; 73, top plate; 74, partition; 8, auxiliary mechanism; 81, auxiliary rod; 82, conical seat; 83, assembly seat; 831, base; 832, cover plate; 833, first bolt; 834, mounting groove; 835, shaft; 9, fixing frame; 91, base; 92, fin; 93, guide groove; 94, internal threaded hole; 95, movable plate; 96, second bolt. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0052] See also Figure 1 The present invention provides a technical solution: a slope support device for rock and soil foundation pit construction, comprising a guard plate 1, both sides of the guard plate 1 are provided with splicing grooves 11, and the two splicing grooves 11 are respectively provided on opposite side walls of the guard plate 1, and the side wall on one side of the guard plate 1 on which the first support plate 4 and the second support plate 5 are installed is symmetrically provided with two limiting grooves 12, and a plurality of positioning blocks 13 are arranged in the two limiting grooves 12, and the plurality of positioning blocks 13 are arc-shaped protrusions, and the plurality of positioning blocks 13 are arranged equidistantly, and the two limiting grooves 12 are provided with matching blocks 14, and the height of the matching blocks 14 is equal to the depth of the limiting groove 12, and the matching blocks 14 correspond to the side wall of one side of the inner wall of the limiting groove 12 A groove is provided on it, and the diameter of the groove is equal to the diameter of the positioning block 13. It should be noted that, through the splicing grooves 11 opened on both sides of the guard plate 1, during the installation process, the two adjacent guard plates 1 can be kept embedded in each other, thereby avoiding gaps at the connection between adjacent guard plates 1, ensuring a good support effect on the overall foundation pit slope. In addition, by opening a limiting groove 12 on the side wall of the guard plate 1, when the groove opened on the matching block 14 contacts the positioning block 13, the side wall of the matching block 14 contacts the inner wall of the limiting groove 12 at the same time, thereby limiting the movement of the matching block 14, thereby improving the stability of the first support plate 4 and the second support plate 5 when supporting the guard plate 1.

[0053] refer to Figure 2 A carrier plate 2 is fixedly connected to the bottom of one side of the guard plate 1. The carrier plate 2 is designed to be corrugated, and the portion of the carrier plate 2 located in the middle of the guard plate 1 is higher than the two ends of the carrier plate 2. The carrier plate 2 is tilted, and the end of the carrier plate 2 away from the guard plate 1 is higher than the connection between the carrier plate 2 and the guard plate 1.

[0054] Specifically, the inner wall of the foundation pit excavated by mechanical equipment is usually not very flat and has many protrusions or depressions. When installing the guard plate 1, the side wall of the guard plate 1 cannot fully contact the inner wall of the foundation pit. Therefore, a carrier plate 2 is arranged at the bottom, and one end of the carrier plate 2 can be embedded in the soil of the inner wall of the foundation pit, forming a blockage from the bottom of the guard plate 1. The soil blocks falling due to the external vibration of the foundation pit or the soil flow caused by rainfall will eventually accumulate on the carrier plate 2, which can fill the gap between the guard plate 1 and the inner wall of the foundation pit, thereby further increasing the contact area between the guard plate 1 and the slope, and improving the overall support effect on the slope of the foundation pit.

[0055] In the above technical solution, an embodiment of the connection component 3 is as follows:

[0056] refer to Figure 3 and Figure 4 A connecting component 3 is provided through the bottom of the guard plate 1, and the position of the connecting component 3 corresponds to the position of the carrier plate 2. The connecting component 3 includes a plurality of through grooves 31 opened on the guard plate 1, and the plurality of through grooves 31 are respectively opened above the connection between the carrier plate 2 and the guard plate 1, and the ends of the plurality of through grooves 31 are provided with connecting pipes 32, and the plurality of connecting pipes 32 are fixedly connected to the side wall of the guard plate 1, and the plurality of connecting pipes 32 and the inner wall of the through grooves 31 are jointly provided with spiral grooves 33.

[0057] It should be noted that the position of the through groove 31 is opposite to the position of the carrier plate 2, wherein the through grooves 31 on both sides are respectively arranged at the low part of the corrugated carrier plate 2, and the multiple through grooves 31 in the middle are arranged at the convex part of the carrier plate 2, so that in the state of rainfall, water and soil flow to the carrier plate 2 and extend to the low parts on both sides, so that the accumulated water flow can be discharged from the through grooves 31 and the connecting pipes 32 on both sides, and finally flow into the drainage ditch opened in the foundation pit to reduce the accumulation of water between the guard plate 1 and the slope. Furthermore, through the opened spiral groove 33, the flowing water and soil can be guided to form a vortex to accelerate the discharge while reducing the possibility of blockage. Furthermore, with the multiple through grooves 31 and the connecting pipe 32 in the middle, air can contact part of the soil to accelerate the evaporation of water. When the soil at the convex part of the carrier plate 2 is dry, the water in the soil on both sides will diffuse to the middle again under the influence of osmotic pressure, so that the soil at the foot of the slope is kept dry as a whole, avoiding the saturation softening phenomenon in some areas of the foot of the slope, which affects the stability of the support.

[0058] refer to Figure 5 and Figure 6 A first support plate 4 and a second support plate 5 are respectively provided on the other side of the guard plate 1, and the first support plate 4 is arranged below the second support plate 5, one side wall of the first support plate 4 is fixedly connected to the side walls of the two positioning blocks 13 located below, and two fixing seats 41 are symmetrically provided on the other side of the first support plate 4, and multiple first reinforcing plates 42 are respectively fixedly connected at both ends of the side wall of the first support plate 4 away from the guard plate 1.

[0059] In addition, an extension plate 51 is vertically arranged in the middle of the second support plate 5, and the extension plate 51 and the second support plate 5 are commonly connected with an annular seat 52, and a plurality of second reinforcing plates 53 are respectively fixedly connected to the two ends of the side wall of the second support plate 5 away from the guard plate 1, and the side wall of the second support plate 5 is fixedly connected to the side walls of the two positioning blocks 13 located above. It should be noted that, by means of the plurality of first reinforcing plates 42 and second reinforcing plates 53 respectively arranged on both sides of the first support plate 4 and the second support plate 5, the edge connection of the two adjacent guard plates 1 can be further fixed, and in conjunction with the opened splicing groove 11, pressure is simultaneously applied from the opposite side walls of the guard plates 1, so that the adjacent guard plates 1 form a whole, thereby maintaining consistency during the support process and avoiding large deviations in the inclination of the adjacent guard plates 1 due to the verticality limitation of the slope.

[0060] In order to achieve more stable support for the stress concentration area at the foot of the slope, the first support mechanism 6 provides an embodiment scheme as follows:

[0061] refer to Figure 7 A first supporting mechanism 6 is connected to the first supporting plate 4, and the first supporting mechanism 6 includes two symmetrically arranged supporting rods 61, one end of the two supporting rods 61 is respectively fixedly connected to the corresponding fixing seats 41, and the other ends of the two supporting rods 61 are commonly connected to a connecting seat 63, and a plurality of connecting rods 62 are commonly connected between the two supporting rods 61, and the plurality of connecting rods 62 are all arc-shaped rods, and the plurality of connecting rods 62 are staggered and penetrated.

[0062] Specifically, one end of the support rod 61 is connected to the fixing seat 41, and the other end is connected to the fixing frame 9 through the connecting seat 63. The support rod 61 is arranged in an arc shape. One end of the connecting rod 62 arranged at the arc-shaped bending part of the support rod 61 is concentrated near the fixing seat 41, and the other end of the connecting rod 62 is connected to the side wall of the support rod 61 on the other side. Through the multiple connecting rods 62 arranged in an staggered manner, the force transmitted from the two ends of the support rod 61 can be effectively dispersed, so that the force is diffused along the distribution angle of the connecting rod 62, thereby improving the supporting performance of the support rod 61 and avoiding deformation of the support rod 61 due to excessive load on the slope foot.

[0063] Furthermore, even if the pressure applied by the slope foot is too large and exceeds the bearing range of the first support mechanism 6, an anchor rod can be directly set at the connection of the connecting rod 62. The bottom of the anchor rod is embedded in the soil below, and the upper end is against the connection of the connecting rod 62, thereby improving the bearing strength of the connecting rod 62 and the support rods 61 on both sides, making it easier for construction personnel to take remedial measures in a timely manner.

[0064] In the above technical solution, an embodiment of the second supporting mechanism 7 is as follows:

[0065] refer to Figure 8 and Fig. 9 The end of the auxiliary mechanism 8 away from the second support plate 5 is connected to the second support mechanism 7, and the second support mechanism 7 includes a support beam 71, the end of the support beam 71 close to the guard plate 1 is the first end, and the end of the support beam 71 away from the guard plate 1 is the second end. The first end of the support beam 71 is fixedly connected to an abutment plate 72, and the abutment plate 72 is set as a circular plate, and the diameter of the abutment plate 72 is equal to the inner diameter of the annular seat 52. The first end of the support beam 71 is fixedly connected to a top plate 73, and the support beam 71 adopts a hollow structure, and a plurality of partitions 74 are arranged inside the support beam 71. 1 extends from the first end to the second end, and the spacing between adjacent partitions 74 gradually increases. Further, one end of the support beam 71 is abutted against the side wall of the guard plate 1 through the abutment plate 72, and the other end is connected to the fixing frame 9 through the top plate 73, so as to support the guard plate 1. Among them, the distribution spacing of the partitions 74 at the first end of the support beam 71 is small, and the support beam 71 between adjacent partitions 74 is set to be arc-shaped and shrinks toward the axis, and the increased cross-sectional inertia moment of multiple partitions 74 is matched to adjust the stress distribution on the support beam 71 to avoid deformation or bending due to excessive bearing capacity.

[0066] refer to Figure 8 , Fig.10 and Fig.11 The second support plate 5 is connected to an auxiliary mechanism 8, which includes a plurality of auxiliary rods 81, one end of which is commonly connected to a conical seat 82, which is sleeved on the support beam 71 and fixedly connected to the support beam 71, and the other ends of the plurality of auxiliary rods 81 are respectively provided with assembly seats 83, which are respectively fixedly connected to the side walls of the second support plate 5 and the extension plate 51, and the assembly seats 83 include a base 831 and a cover plate 832, and the base 831 and the cover plate 832 are detachably connected by a first bolt 833, and a mounting groove 834 is commonly provided on the base 831 and the cover plate 832, and a shaft body 835 is provided in the mounting groove 834, and one end of the shaft body 835 extending to the outside of the cover plate 832 is fixedly connected to the auxiliary rod 81.

[0067] Specifically, the base 831 and the cover plate 832 can be connected by setting a plurality of first bolts 833, thereby fixing the shaft body 835 in the mounting groove 834. Furthermore, by setting the shaft body 835 as a rotating body with different curvatures, it can be ensured that the side wall of the shaft body 835 is in full contact with the inner wall of the mounting groove 834, and the side wall extending to the outside of the mounting groove 834 is connected to the auxiliary rod 81, thereby dispersing the force transmitted to the auxiliary rod 81 by the second support plate 5, and avoiding the reduction of the strength of the connection due to the tilted setting of the auxiliary rod 81.

[0068] In addition, the auxiliary mechanism 8 is abutted against the side wall of the second support plate 5 through a plurality of assembly seats 83, and the support beam 71 is abutted against the side wall of the guard plate 1 through the abutment plate 72. In view of the larger support range at the top of the guard plate 1, support can be provided from a plurality of stress concentration points to ensure that the guard plate 1 is evenly stressed.

[0069] refer to Fig.12 The second supporting mechanism 7 and the first supporting mechanism 6 are commonly connected to a fixing frame 9 at one end away from the guard plate 1. The bottom of the fixing frame 9 is fixedly connected to a base 91. A plurality of fins 92 are respectively connected to the opposite side walls of the fixing frame 9, and the plurality of fins 92 are all inclinedly arranged. A guide groove 93 is provided on the side wall of the base 91 close to the guard plate 1. A plurality of groups of internal threaded holes 94 are provided in the guide groove 93. Two movable plates 95 are installed in the internal threaded holes 94 through second bolts 96. The side wall of the movable plate 95 located at the bottom is fixedly connected to the connecting seat 63, and the side wall of the movable plate 95 located at the top is fixedly connected to the top plate 73.

[0070] Specifically, when installing the guard plate 1, a hole of appropriate depth can be dug at the bottom of the foundation pit, and the bottom of the fixing frame 9 can be buried in the hole. The base 91 contacts the inner wall of the hole to keep the fixing frame 9 vertical. According to the soil state of the foundation pit slope, the first supporting mechanism 6 and the second supporting mechanism 7 select appropriate supporting heights, and fix them respectively through the second bolts 96 and the position of the movable plate 95. The first supporting mechanism 6 and the second supporting mechanism 7 are respectively connected to the first support plate 4 and the second support plate 5 at one end away from the fixing frame 9 to keep the corresponding matching block 14 in the same height, so that the force transmitted to the guard plate 1 according to the stress concentration area of ​​the slope can be effectively adjusted. In addition, when supporting a foundation pit of greater depth, the fixing frame 9 can be directly poured with concrete, and the movable plate 95 can be fixed with expansion bolts after opening corresponding countersunk holes. Multiple sets of first supporting mechanisms 6 or second supporting mechanisms 7 are installed respectively. After the construction is completed, the guard plate 1 is disassembled, and the fixing frame 9 can be retained in the foundation pit as the basic support structure in the subsequent engineering links to improve the utilization rate of construction resources.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A slope support device for rock and soil foundation pit construction, comprising a guard plate (1), characterized in that: A carrier plate (2) is fixedly connected to the bottom of one side of the guard plate (1), a connecting component (3) is provided through the bottom of the guard plate (1), and the position of the connecting component (3) corresponds to the position of the carrier plate (2); A first support plate (4) and a second support plate (5) are respectively arranged on the other side of the guard plate (1), and the first support plate (4) is arranged below the second support plate (5); a first supporting mechanism (6) is connected to the first support plate (4), and an auxiliary mechanism (8) is connected to the second support plate (5); an end of the auxiliary mechanism (8) away from the second support plate (5) is connected to a second supporting mechanism (7), and an end of the second supporting mechanism (7) and the end of the first supporting mechanism (6) away from the guard plate (1) are commonly connected to a fixing frame (9).

2. The rock and soil foundation pit construction slope support device according to claim 1 is characterized in that: Both sides of the guard plate (1) are provided with splicing grooves (11), and the two splicing grooves (11) are respectively provided on opposite side walls of the guard plate (1); The guard plate (1) has two symmetrically arranged side walls on which the first support plate (4) and the second support plate (5) are mounted, and a plurality of positioning blocks (13) are arranged in each of the two limiting grooves (12). The plurality of positioning blocks (13) are all arc-shaped protrusions, and the plurality of positioning blocks (13) are arranged at equal distances. A matching block (14) is provided in each of the two limiting grooves (12), and the height of the matching block (14) is equal to the depth of the limiting groove (12). A groove is provided on a side wall of the matching block (14) corresponding to the inner wall of the limiting groove (12), and the diameter of the groove is equal to the diameter of the positioning block (13).

3. The rock and soil foundation pit construction slope support device according to claim 1 is characterized by: The carrier plate (2) is designed to be corrugated, and the portion of the carrier plate (2) located in the middle of the guard plate (1) is higher than the two ends of the carrier plate (1); The carrier plate (2) is arranged at an angle, and one end of the carrier plate (2) away from the guard plate (1) is higher than the connection between the carrier plate (2) and the guard plate (1).

4. The rock and soil foundation pit construction slope support device according to claim 3 is characterized by: The communication component (3) comprises a plurality of through slots (31) formed on the guard plate (1), and the plurality of through slots (31) are respectively formed above the connection between the carrier plate (2) and the guard plate (1); The ends of the plurality of through grooves (31) are all provided with connecting pipes (32), and the plurality of connecting pipes (32) are all fixedly connected to the side wall of the guard plate (1), and the plurality of connecting pipes (32) and the inner wall of the through grooves (31) are jointly provided with spiral grooves (33).

5. The rock and soil foundation pit construction slope support device according to claim 2 is characterized by: One side wall of the first support plate (4) is fixedly connected to the side walls of two positioning blocks (13) located below, and the other side of the first support plate (4) is symmetrically provided with two fixing seats (41); A plurality of first reinforcing plates (42) are respectively fixedly connected to two ends of a side wall of the first support plate (4) away from the guard plate (1).

6. The rock and soil foundation pit construction slope support device according to claim 5 is characterized by: An extension plate (51) is vertically arranged in the middle of the second support plate (5), and the extension plate (51) and the second support plate (5) are connected together with an annular seat (52); A plurality of second reinforcing plates (53) are respectively fixedly connected to two ends of a side wall of the second support plate (5) away from the guard plate (1); The side wall of the second support plate (5) is fixedly connected to the side walls of two positioning blocks (13) located above.

7. The rock and soil foundation pit construction slope support device according to claim 6 is characterized by: The first supporting mechanism (6) comprises two symmetrically arranged supporting rods (61), one end of the two supporting rods (61) being fixedly connected to corresponding fixed seats (41) respectively, and the other ends of the two supporting rods (61) being commonly connected to a connecting seat (63); A plurality of connecting rods (62) are commonly connected between the two support rods (61); the plurality of connecting rods (62) are all arc-shaped rods, and the plurality of connecting rods (62) are arranged in an interlaced manner.

8. The rock and soil foundation pit construction slope support device according to claim 7, characterized in that: The second supporting mechanism (7) comprises a supporting beam (71), wherein an end of the supporting beam (71) close to the guard plate (1) is a first end, and an end of the supporting beam (71) away from the guard plate (1) is a second end, and the first end of the supporting beam (71) is fixedly connected to an abutment plate (72), and the abutment plate (72) is configured as a circular plate, and the diameter of the abutment plate (72) is equal to the inner diameter of the annular seat (52); The first end of the support beam (71) is fixedly connected to a top plate (73); The support beam (71) adopts a hollow structure, and a plurality of partitions (74) are arranged inside the support beam (71), and the distance between adjacent partitions (74) gradually increases from the first end to the second end of the support beam (71).

9. The rock and soil foundation pit construction slope support device according to claim 8, characterized in that: The auxiliary mechanism (8) comprises a plurality of auxiliary rods (81), one end of each of the plurality of auxiliary rods (81) being commonly connected to a conical seat (82), the conical seat (82) being sleeved on the support beam (71), and the conical seat (82) being fixedly connected to the support beam (71); The other ends of the plurality of auxiliary rods (81) are respectively provided with assembly seats (83), and the plurality of assembly seats (83) are respectively fixedly connected to the side walls of the second support plate (5) and the extension plate (51); The assembly seat (83) comprises a base (831) and a cover plate (832), and the base (831) and the cover plate (832) are detachably connected via a first bolt (833). The base (831) and the cover plate (832) are both provided with a mounting groove (834), and a shaft (835) is provided in the mounting groove (834). One end of the shaft (835) extending outside the cover plate (832) is fixedly connected to the auxiliary rod (81).

10. The rock and soil foundation pit construction slope support device according to claim 8, characterized in that: The bottom of the fixing frame (9) is fixedly connected to a base (91), and opposite side walls of the fixing frame (9) are respectively connected to a plurality of fins (92), and the plurality of fins (92) are all arranged obliquely; A guide groove (93) is provided on a side wall of the base (91) close to the guard plate (1), and a plurality of groups of internal thread holes (94) are provided in the guide groove (93). Two movable plates (95) are mounted on the internal thread holes (94) through second bolts (96); The side wall of the movable plate (95) located at the bottom is fixedly connected to the connecting seat (63), and the side wall of the movable plate (95) located at the top is fixedly connected to the top plate (73).

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