Fabricated buttress retaining wall and construction method

Abstract

The invention belongs to the technical field of hydraulic engineering construction, and discloses an assembly type buttress retaining wall and a construction method.The assembly type buttress retaining wall comprises a cast-in-place bottom plate, a plurality of prefabricated baffles and a plurality of prefabricated buttresses, the prefabricated baffles are linearly arranged above the cast-in-place bottom plate, the prefabricated baffles are connected in a pouring mode, and a plurality of semi-grouting sleeves are arranged at the bottoms of the prefabricated baffles; a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place bottom plate, the number of the prefabricated buttresses is the same as that of the prefabricated baffles, the prefabricated buttresses are perpendicular to the prefabricated baffles and arranged above the cast-in-place bottom plate side by side, and the prefabricated buttresses and the prefabricated baffles as well as the prefabricated buttresses and the cast-in-place bottom plate are connected through threaded assemblies. Tedious procedures such as steel bar binding and formwork installation can be avoided, the construction efficiency is improved, and the cast-in-place bottom plate is integrally formed and poured, so that the bottom plate of the whole buttress retaining wall is firmer, good in stability and high in shock resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy project construction, and particularly relates to an assembled buttress retaining wall and a construction method. Background Art

[0002] Currently, buttress retaining walls are generally cast-in-place, requiring on-site steel bar tying, building formwork installation, and concrete pouring. Since the buttress is a trapezoidal structure, the size of each buttress steel bar is different. Therefore, when cutting steel bars at the steel bar processing plant, each buttress steel bar needs to be marked for on-site installation. This increases the difficulty of cutting steel bars and on-site installation. Cutting and installation are prone to errors, resulting in rework and delays in construction.

[0003] In addition, the retaining wall construction formwork generally adopts wooden formwork. Due to the poor rigidity and strength of wooden formwork, multiple reinforcement measures such as internal support and external pulling are required to ensure that the construction formwork will not deform or even cause formwork expansion when pouring concrete. However, the installation of the construction formwork is relatively cumbersome, which affects the construction efficiency. In addition, the buttress formwork is a special-shaped formwork and cannot be reused, resulting in material waste.

[0004] At the same time, since the retaining wall is a thin-walled structure and the steel bars are densely distributed, more detailed vibration is required to make the poured concrete more compact. However, when pouring concrete, due to the influence of transportation distance and temperature, the concrete transported to the construction site often has the problem of poor workability, and the formwork cannot be touched during the vibration process, otherwise it will cause the formwork to loosen. Therefore, the vibration effect is often general, and it is easy to produce quality problems such as honeycomb and hemp surface. After the concrete is poured, it needs to be maintained in time. The maintenance method and maintenance time need to comply with the specifications and construction technical requirements, which will affect the overall construction efficiency. Summary of the invention

[0005] The present invention aims to address the problems of the prior art and to provide an assembled buttress retaining wall and construction method which can avoid tedious processes such as steel bar binding and formwork installation, improve construction efficiency, and cast the cast-in-place base plate in one piece, so that the base plate of the entire buttress retaining wall is more solid, has good stability, and strong earthquake resistance.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] An assembled buttress retaining wall comprises a cast-in-place bottom plate, a plurality of prefabricated retaining plates and a plurality of prefabricated buttresses;

[0008] A plurality of the prefabricated baffles are arranged in a straight line above the cast-in-place bottom plate, and the prefabricated baffles are connected by casting;

[0009] A plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffle plate, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place bottom plate;

[0010] The number of the prefabricated buttresses is the same as that of the prefabricated baffles. The prefabricated buttresses are arranged perpendicular to the prefabricated baffles and are arranged side by side above the cast-in-place base plate. The prefabricated buttresses and the prefabricated baffles, and the prefabricated buttresses and the cast-in-place base plate are all connected through threaded components.

[0011] Preferably, the cast-in-place base plate comprises a cast-in-place base plate, a cast-in-place baffle plate and a plurality of cast-in-place buttresses;

[0012] The cast-in-place base plate, cast-in-place baffle plate and a plurality of cast-in-place buttresses are integrally formed;

[0013] The cast-in-place baffle is arranged below the plurality of prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are fixedly arranged on the top of the cast-in-place baffle;

[0014] The plurality of cast-in-place buttresses are correspondingly arranged below the plurality of prefabricated buttresses and are connected to the prefabricated buttresses.

[0015] Preferably, the top of the cast-in-place baffle and the bottom of the prefabricated baffle are also provided with tongue-and-groove seams that fit together.

[0016] Preferably, a plurality of metal pads are placed equidistantly on the top of the cast-in-place baffle to adjust the bottom elevation of the prefabricated baffle.

[0017] Preferably, a key groove is provided on the side of the prefabricated baffle, and a plurality of U-shaped ribs are staggered between the prefabricated baffles. Long ribs are provided through the four corners of the plurality of U-shaped ribs. The long ribs are perpendicular to the U-shaped ribs, and the bottom of the long ribs extends to the cast-in-place baffle. The top of the long ribs is lower than the top of the prefabricated baffle. The prefabricated baffles are connected by pouring concrete, and the poured concrete needs to cover the U-shaped ribs and the long ribs.

[0018] Preferably, each of the prefabricated baffles comprises two layers, the prefabricated baffles of the first layer are arranged on the cast-in-place baffles, a plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles of the second layer, a plurality of connecting ribs corresponding to the semi-grouting sleeves are fixedly arranged at the top of the prefabricated baffles of the first layer; and tongue-and-groove seams that cooperate with each other are also arranged between the prefabricated baffles of the first layer and the prefabricated baffles of the second layer.

[0019] Preferably, the semi-grouting sleeve comprises a steel bar screw, a sleeve, a grouting hole, a grouting hole and an insertion port, the steel bar screw is threadedly connected to one end of the sleeve, the insertion port is arranged at the other end of the sleeve, the grouting hole and the grouting hole are arranged on the side wall of the sleeve, and the connecting bar can be inserted into the insertion port and extend into the interior of the sleeve;

[0020] The semi-grouting sleeve is embedded in the bottom of the prefabricated baffle of the first layer and the prefabricated baffle of the second layer, and the grouting hole, the grouting hole and the plug interface are exposed outside the prefabricated baffle of the first layer and the prefabricated baffle of the second layer.

[0021] Preferably, a mortar groove of matching size is provided between the prefabricated buttress and the prefabricated baffle;

[0022] The prefabricated buttress and the cast-in-place buttress, and the prefabricated buttress and the prefabricated baffle are all connected via threaded components;

[0023] The threaded assembly includes a first bolt, a second bolt, a steel plate, and a nut. The first bolt and the second bolt are respectively arranged at the edges of the pre-connected prefabricated buttress and the cast-in-place buttress. The first bolt and the second bolt are respectively arranged at the edges of the pre-connected prefabricated buttress and the prefabricated baffle. The upper part of the steel plate is sleeved on the first bolt, and the lower part of the steel plate is sleeved on the second bolt. The nut is used to tighten the first bolt and the second bolt.

[0024] Preferably, the top of the cast-in-place buttress and the bottom of the prefabricated buttress are provided with mortar grooves of matching sizes, each of the prefabricated buttresses includes two layers, the prefabricated buttresses of the first layer are arranged on the cast-in-place buttresses, the top of the prefabricated buttresses of the first layer and the bottom of the prefabricated buttresses of the second layer are provided with mortar grooves of matching sizes, and the prefabricated buttresses of the first layer and the prefabricated buttresses of the second layer are connected by the threaded assembly.

[0025] The method for construction using the assembled buttress retaining wall as described above comprises the following steps:

[0026] S1. Use concrete pouring to form a cast-in-place base plate. During the pouring process, bolts and connecting bars are embedded on the top of the cast-in-place base plate;

[0027] S2, hoisting several prefabricated baffles onto the cast-in-place bottom plate, so that the semi-grouting sleeves at the bottom of the prefabricated baffles are sleeved onto the pre-buried connecting ribs at the top of the cast-in-place bottom plate;

[0028] S3. Use mortar to seal the gaps at the joints. After the mortar solidifies, grout the semi-grouting sleeve with high-strength micro-expansion structural slurry;

[0029] S4. Hoist several prefabricated buttresses to the cast-in-place base plate. The prefabricated buttresses are arranged perpendicular to the prefabricated baffles. The prefabricated buttresses and the cast-in-place base plate are connected by threaded components. The prefabricated buttresses and the prefabricated baffles are connected by threaded components. The gaps at the connections are sealed with mortar.

[0030] S5. Install building formwork between prefabricated baffles, pour concrete, and connect several prefabricated baffles.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] (1) The present invention forms an assembled buttress retaining wall by using a cast-in-place base plate, a prefabricated baffle plate and a prefabricated buttress plate, thereby avoiding cumbersome processes such as steel bar binding and template installation, and improving construction efficiency. The prefabricated baffle plate and the prefabricated buttress plate are both factory-prefabricated components, and the vibration and maintenance processes are more convenient and quick, and the overall quality is significantly improved;

[0033] (2) The present invention uses a semi-grouting sleeve, and pours a high-strength micro-expansion structural grouting material into the semi-grouting sleeve. With the micro-expansion characteristics of the grouting material and the confinement effect of the sleeve, the friction between the connecting rib and the sleeve is enhanced, so that the structure between the prefabricated baffle and the cast-in-place bottom plate is stable, and the quality of the overall buttress retaining wall is improved;

[0034] (3) The present invention adopts a cast-in-place bottom plate, and the cast-in-place base plate, cast-in-place baffle plate and several cast-in-place buttresses of the cast-in-place bottom plate are integrally molded and cast, so that the bottom plate of the buttress retaining wall is more solid. When the prefabricated baffle plate and prefabricated buttress are installed on the cast-in-place bottom plate, the tightness between the prefabricated baffle plate, prefabricated buttress and the cast-in-place bottom plate is stronger. Compared with the base plate, baffle plate and buttress that are all prefabricated in blocks, the cast-in-place base plate, cast-in-place baffle plate and several cast-in-place buttresses that are integrally cast and molded are more stable, and the entire assembled buttress retaining wall is further reinforced;

[0035] (4) The present invention arranges a plurality of U-shaped ribs in an interlaced manner between the prefabricated baffles. Long ribs are provided through the four corners of the plurality of U-shaped ribs. The long ribs are perpendicular to the U-shaped ribs. On this basis, the connection parts between the prefabricated baffles are cast, so that the prefabricated baffles can jointly bear the load and transfer stress, thereby enhancing the seismic resistance and bearing capacity between the prefabricated baffles. When the cast concrete is vibrated, the vibration effect is better, and the structure between the prefabricated baffles is more stable. By arranging keyways, structural loosening caused by external vibrations and the like is avoided, thereby enhancing stability, thereby enhancing the stability, seismic resistance and bearing capacity of the entire assembled buttress retaining wall, and improving the overall quality;

[0036] (5) The present invention provides tongue-and-groove joints so that loads can be dispersed and transferred between cast-in-place baffles and prefabricated baffles, between cast-in-place buttresses and prefabricated buttresses, and between the first and second layers of prefabricated buttresses, thereby avoiding damage to local components due to excessive loads and improving the bearing capacity of the assembled buttress retaining wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the assembled buttress retaining wall according to an embodiment of the present invention;

[0038] Figure 2A three-dimensional perspective view of a plurality of half grouting sleeves according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of a semi-grouting sleeve according to an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of a cast-in-place base plate structure according to an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of an angled structure of a prefabricated baffle of the first layer of an embodiment of the present invention;

[0042] Figure 6 Another perspective structural diagram of the prefabricated baffle of the first layer of an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the prefabricated baffle and the cast-in-place baffle of the first layer after installation in an embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of the structure after the prefabricated baffles of the first layer and the prefabricated baffles of the second layer are installed in an embodiment of the present invention;

[0045] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0046] Fig.10 This is a schematic structural diagram of the prefabricated buttresses of the first floor, the prefabricated baffles of the first floor and the cast-in-place bottom plate after installation in an embodiment of the present invention;

[0047] Fig.11 This is a schematic diagram of the structure after the prefabricated buttresses of the first and second floors, the prefabricated baffles of the first and second floors, and the cast-in-place bottom plate are installed in an embodiment of the present invention;

[0048] Fig.12 This is a schematic diagram of the position structure of the first bolt, the second bolt and the mortar groove according to an embodiment of the present invention;

[0049] Fig.13 for Fig.12 A partial enlarged view of the middle A;

[0050] Fig.14 It is a schematic diagram of the installation structure of the bolt assembly according to an embodiment of the present invention;

[0051] Fig.15 The figure is a schematic diagram of the position structure of the metal pad and the cast-in-place baffle according to an embodiment of the present invention.

[0052] Description of reference numerals:

[0053] 1. Cast-in-place base plate; 11. Cast-in-place base plate; 12. Cast-in-place baffle; 121. Metal pad; 13. Cast-in-place buttress; 2. Precast baffle; 21. U-shaped rib; 22. Long rib; 23. Precast baffle of the first layer; 24. Precast baffle of the second layer; 25. Keyway; 3. Precast buttress; 31. Precast buttress of the first layer; 32. Precast buttress of the second layer; 33. Mortar trough; 4. Semi-grouting sleeve; 41. Steel bar screw; 42. Sleeve; 43. Grouting hole; 44. Grouting hole; 45. Plug interface; 5. Connecting rib; 6. Threaded assembly; 61. First bolt; 62. Second bolt; 63. Steel plate; 64. Nut; 7. Tongue and groove joint. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0056] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0057] Example 1

[0058] Combination Figure 1-3As shown, an embodiment of the present invention provides an assembled buttress retaining wall, comprising a cast-in-place base plate 1, a plurality of prefabricated baffles 2 and a plurality of prefabricated buttresses 3; the plurality of prefabricated baffles 2 are arranged in a straight line above the cast-in-place base plate 1, and the prefabricated baffles 2 are cast and connected; a plurality of semi-grouting sleeves 4 are provided at the bottom of the prefabricated baffles 2, and a plurality of connecting ribs 5 corresponding to the semi-grouting sleeves 4 are provided at the top of the cast-in-place base plate 1; the structure of the semi-grouting sleeves 4 and the connecting ribs 5 is as shown in FIG. Figure 3 As shown, the semi-grouting sleeve 4 includes a steel bar screw 41, a sleeve 42, a grouting hole 43, a grouting hole 44 and an insertion port 45. The steel bar screw 41 is threadedly connected to one end of the sleeve 42, the insertion port 45 is arranged at the other end of the sleeve 42, the grouting hole 43 and the grouting hole 44 are arranged on the side wall of the sleeve 42, and the connecting bar 5 can be inserted into the insertion port 45 and extend to the inside of the sleeve 42. In this embodiment, a high-strength micro-expansion structural grouting material can be poured into the semi-grouting sleeve 4;

[0059] The number of the prefabricated buttresses 3 is the same as that of the prefabricated baffles 2. The prefabricated buttresses 3 are arranged perpendicular to the prefabricated baffles 2 and are arranged side by side above the cast-in-place base plate 1. The prefabricated buttresses 3 and the prefabricated baffles 2, and the prefabricated buttresses 3 and the cast-in-place base plate 1 are all connected via threaded components 6.

[0060] The prefabricated buttress retaining wall is composed of the cast-in-place bottom plate 1, the prefabricated baffle plate 2 and the prefabricated buttress 3, which avoids the cumbersome processes such as steel bar binding and template installation, and improves the construction efficiency. The prefabricated baffle plate 2 and the prefabricated buttress 3 are both prefabricated components in the factory, and the vibration and maintenance processes are more convenient and quick, and the overall quality is significantly improved;

[0061] In addition, by using a semi-grouting sleeve 4 and pouring high-strength micro-expansion structural grouting material into the semi-grouting sleeve 4, the friction between the connecting reinforcement 5 and the sleeve 42 is enhanced by virtue of the micro-expansion characteristics of the grouting material and the confining effect of the sleeve 42, so that the structure between the prefabricated baffle 2 and the cast-in-place base plate 1 is stable, thereby improving the quality of the overall buttress retaining wall.

[0062] Example 2

[0063] Combination Figure 1-3As shown, an embodiment of the present invention provides an assembled buttress retaining wall, comprising a cast-in-place base plate, a plurality of prefabricated baffles and a plurality of prefabricated buttresses; the plurality of prefabricated baffles are arranged in a straight line above the cast-in-place base plate, and the prefabricated baffles are cast in connection; a plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place base plate; the number of the prefabricated buttresses is the same as that of the prefabricated baffles, the prefabricated buttresses are arranged perpendicular to the prefabricated baffles, and are arranged side by side above the cast-in-place base plate, and the prefabricated buttresses are connected to the prefabricated baffles, and the prefabricated buttresses are connected to the cast-in-place base plate through threaded components;

[0064] On this basis, in this embodiment, combined with Figure 4 As shown, the cast-in-place base plate 1 includes a cast-in-place base plate 11, a cast-in-place baffle plate 12 and a plurality of cast-in-place buttresses 13; the cast-in-place base plate 11, the cast-in-place baffle plate 12 and the plurality of cast-in-place buttresses 13 are integrally formed; the cast-in-place baffle plate 12 is arranged below the plurality of prefabricated baffle plates 2, and a plurality of connecting bars 5 corresponding to the semi-grouting sleeves 4 are fixedly arranged on the top of the cast-in-place baffle plate 12; the plurality of cast-in-place buttresses 13 are correspondingly arranged below the plurality of prefabricated buttresses 3 and connected to the prefabricated buttresses 3;

[0065] By adopting a cast-in-place base plate 1, and the cast-in-place base plate 11, cast-in-place baffle plate 12 and several cast-in-place buttresses 13 of the cast-in-place base plate 1 are integrally formed and cast, the base plate of the buttress retaining wall is made more solid, and then when the prefabricated baffle plate 2 and the prefabricated buttress 3 are installed on the cast-in-place base plate 1, the tightness between the prefabricated baffle plate 2, the prefabricated buttress 3 and the cast-in-place base plate 1 is stronger. Compared with the base plate, baffle plate and buttress that are all prefabricated in blocks, the cast-in-place base plate 11, cast-in-place baffle plate 12 and several cast-in-place buttresses 13 that are cast in one piece are more stable, and the entire assembled buttress retaining wall is further reinforced.

[0066] Example 3

[0067] Combination Figure 1-3 As shown, an embodiment of the present invention provides an assembled buttress retaining wall, comprising a cast-in-place base plate, a plurality of prefabricated baffles and a plurality of prefabricated buttresses; the plurality of prefabricated baffles are arranged in a straight line above the cast-in-place base plate, and the prefabricated baffles are cast in connection; a plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place base plate; the number of the prefabricated buttresses is the same as that of the prefabricated baffles, the prefabricated buttresses are arranged perpendicular to the prefabricated baffles, and are arranged side by side above the cast-in-place base plate, and the prefabricated buttresses are connected to the prefabricated baffles, and the prefabricated buttresses are connected to the cast-in-place base plate through threaded components;

[0068] On this basis, in this embodiment, combined with Figure 5-9As shown, a key groove 25 is provided on the side of the prefabricated baffle 2, and a plurality of U-shaped ribs 21 are staggered between the prefabricated baffles 2. Long ribs 22 are penetrated through the four corners of the plurality of U-shaped ribs 21. The long ribs 22 are perpendicular to the U-shaped ribs 21. The bottom of the long ribs 22 extends to the cast-in-place baffle 12. The top of the long ribs 22 is lower than the top of the prefabricated baffle 2. The prefabricated baffles 2 are connected by pouring concrete, and the poured concrete needs to cover the U-shaped ribs 21 and the long ribs 22.

[0069] Furthermore, each of the prefabricated baffles 2 includes two layers, the prefabricated baffles 23 of the first layer are arranged on the cast-in-place baffles 12, a plurality of semi-grouting sleeves 4 are arranged at the bottom of the prefabricated baffles 24 of the second layer, a plurality of connecting ribs 5 corresponding to the semi-grouting sleeves 4 are fixedly arranged at the top of the prefabricated baffles 23 of the first layer; and a tongue-and-groove seam 7 that cooperates with each other is also arranged between the prefabricated baffles 23 of the first layer and the prefabricated baffles 24 of the second layer;

[0070] Furthermore, the semi-grouting sleeve 4 is embedded in the bottom of the prefabricated baffle 23 of the first layer and the prefabricated baffle 24 of the second layer, and the grouting hole 43, the grouting hole 44 and the plug-in port 45 are exposed outside the prefabricated baffle 23 of the first layer and the prefabricated baffle 24 of the second layer.

[0071] By staggeredly arranging a number of U-shaped ribs 21 between the prefabricated baffles 2, and long ribs 22 running through the four corners of the U-shaped ribs 21, the connection parts between the prefabricated baffles 2 are cast on this basis, so that the prefabricated baffles 2 can jointly bear the load and transfer stress, thereby enhancing the seismic resistance and bearing capacity of the prefabricated baffles 2. When the poured concrete is vibrated, the vibration effect is better, and the structure between the prefabricated baffles 2 is more stable. By arranging the key slot 25, the loosening of the structure caused by external vibration and the like is avoided, thereby enhancing the stability, thereby enhancing the stability, seismic resistance and bearing capacity of the entire assembled buttress retaining wall, and improving the overall quality.

[0072] Example 4

[0073] Combination Figure 1-3 As shown, an embodiment of the present invention provides an assembled buttress retaining wall, comprising a cast-in-place base plate, a plurality of prefabricated baffles and a plurality of prefabricated buttresses; the plurality of prefabricated baffles are arranged in a straight line above the cast-in-place base plate, and the prefabricated baffles are cast in connection; a plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place base plate; the number of the prefabricated buttresses is the same as that of the prefabricated baffles, the prefabricated buttresses are arranged perpendicular to the prefabricated baffles, and are arranged side by side above the cast-in-place base plate, and the prefabricated buttresses are connected to the prefabricated baffles, and the prefabricated buttresses are connected to the cast-in-place base plate through threaded components;

[0074] On this basis, in this embodiment, combined with Figure 10-15 As shown, the top of the cast-in-place baffle 12 and the bottom of the prefabricated baffle 2 are also provided with a tongue-and-groove seam 7 that cooperates with each other;

[0075] Furthermore, a number of metal pads 121 are equidistantly placed on the top of the cast-in-place baffle 12 to adjust the bottom elevation of the prefabricated baffle 2;

[0076] Furthermore, a mortar groove 33 of matching size is provided between the prefabricated buttress 3 and the prefabricated baffle 2, and the prefabricated buttress 3 and the cast-in-place buttress 13, as well as the prefabricated buttress 3 and the prefabricated baffle 2 are connected via a threaded assembly 6; the threaded assembly 6 comprises a first bolt 61, a second bolt 62, a steel plate 63, and a nut 64, wherein the first bolt 61 and the second bolt 62 are respectively arranged at the edges of the pre-connected prefabricated buttress 3 and the cast-in-place buttress 13, the first bolt 61 and the second bolt 62 are respectively arranged at the edges of the pre-connected prefabricated buttress 3 and the prefabricated baffle 2, the upper part of the steel plate 63 is sleeved on the first bolt 61, and the lower part of the steel plate 63 is sleeved on the second bolt 62, and the nut 64 is used to tighten the first bolt 61 and the second bolt 62;

[0077] Furthermore, the top of the cast-in-place buttress 13 and the bottom of the prefabricated buttress 3 are provided with mortar grooves 33 of matching sizes, and each of the prefabricated buttresses 3 includes two layers, the prefabricated buttresses 31 of the first layer are arranged on the cast-in-place buttresses 13, and the top of the prefabricated buttresses 31 of the first layer and the bottom of the prefabricated buttresses 32 of the second layer are provided with mortar grooves 33 of matching sizes, and the prefabricated buttresses 31 of the first layer and the prefabricated buttresses 32 of the second layer are connected by the threaded assembly 6; in this embodiment, the positions of the mortar grooves 33 are sealed with mortar, and the gaps generated at other connections are also sealed with mortar.

[0078] By arranging the tongue-and-groove joint 7, the load can be dispersed and transferred between the cast-in-place baffle 12 and the prefabricated baffle 2, between the cast-in-place buttress 13 and the prefabricated buttress 3, and between the prefabricated buttress 31 of the first layer and the prefabricated buttress 32 of the second layer, thereby avoiding damage caused by excessive load on local components and improving the bearing capacity of the assembled buttress retaining wall.

[0079] Example 5

[0080] Combination Figure 1-3As shown, an embodiment of the present invention provides an assembled buttress retaining wall, comprising a cast-in-place base plate, a plurality of prefabricated baffles and a plurality of prefabricated buttresses; the plurality of prefabricated baffles are arranged in a straight line above the cast-in-place base plate, and the prefabricated baffles are cast in connection; a plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place base plate; the number of the prefabricated buttresses is the same as that of the prefabricated baffles, the prefabricated buttresses are arranged perpendicular to the prefabricated baffles, and are arranged side by side above the cast-in-place base plate, and the prefabricated buttresses are connected to the prefabricated baffles, and the prefabricated buttresses are connected to the cast-in-place base plate through threaded components;

[0081] On this basis, in this embodiment, a method for construction using the aforementioned assembled buttress retaining wall is also provided, comprising the following steps:

[0082] S1, using concrete pouring to form a cast-in-place base plate 1, during the pouring process, pre-embed bolts and connecting ribs 5 on the top of the cast-in-place base plate 1;

[0083] S2, hoisting a number of prefabricated baffles 2 onto the cast-in-place base plate 1, so that the semi-grouting sleeve 4 at the bottom of the prefabricated baffle 2 is sleeved onto the pre-buried connecting rib 5 at the top of the cast-in-place base plate 1;

[0084] S3, using mortar to seal the gap at the joint, and after the mortar solidifies, grouting the semi-grouting sleeve 4 with high-strength micro-expansion structural slurry;

[0085] S4, hoisting several prefabricated buttresses 3 onto the cast-in-place base plate 1, the prefabricated buttresses 3 are arranged perpendicular to the prefabricated baffles 2, and the prefabricated buttresses 3 and the cast-in-place base plate 1 are connected by threaded components 6, and the prefabricated buttresses 3 and the prefabricated baffles 2 are connected by threaded components 6, and the gaps at the connections are sealed with mortar;

[0086] S5. Install building formwork between the prefabricated baffles 2, pour concrete, and connect several prefabricated baffles 2.

[0087] The above description is only an embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the application scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled buttress retaining wall, characterized in that: It includes a cast-in-place base plate, a number of prefabricated baffles and a number of prefabricated buttresses; A plurality of the prefabricated baffles are arranged in a straight line above the cast-in-place bottom plate, and the prefabricated baffles are connected by casting; A plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffle plate, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are arranged at the top of the cast-in-place bottom plate; The number of the prefabricated buttresses is the same as that of the prefabricated baffles. The prefabricated buttresses are arranged perpendicular to the prefabricated baffles and are arranged side by side above the cast-in-place base plate. The prefabricated buttresses and the prefabricated baffles, and the prefabricated buttresses and the cast-in-place base plate are all connected through threaded components.

2. The assembled buttress retaining wall according to claim 1, characterized in that: The cast-in-place bottom plate includes a cast-in-place base plate, a cast-in-place baffle plate and a plurality of cast-in-place buttresses; The cast-in-place base plate, cast-in-place baffle plate and a plurality of cast-in-place buttresses are integrally formed; The cast-in-place baffle is arranged below the plurality of prefabricated baffles, and a plurality of connecting ribs corresponding to the semi-grouting sleeves are fixedly arranged on the top of the cast-in-place baffle; The plurality of cast-in-place buttresses are correspondingly arranged below the plurality of prefabricated buttresses and are connected to the prefabricated buttresses.

3. The assembled buttress retaining wall according to claim 2, characterized in that: The top of the cast-in-place baffle and the bottom of the prefabricated baffle are also provided with tongue-and-groove seams that match each other.

4. The assembled buttress retaining wall according to claim 2, characterized in that: A number of metal pads are equidistantly placed on the top of the cast-in-place baffle to adjust the bottom elevation of the prefabricated baffle.

5. The assembled buttress retaining wall according to claim 2, characterized in that: A key groove is provided on the side of the prefabricated baffle, and a plurality of U-shaped ribs are staggered between the prefabricated baffles. Long ribs are penetrated through the four corners of the plurality of U-shaped ribs. The long ribs are perpendicular to the U-shaped ribs, and the bottom of the long ribs extends to the cast-in-place baffle. The top of the long ribs is lower than the top of the prefabricated baffle. The prefabricated baffles are connected by pouring concrete, and the poured concrete needs to cover the U-shaped ribs and the long ribs.

6. The assembled buttress retaining wall according to claim 2, characterized in that: Each of the prefabricated baffles includes two layers. The prefabricated baffles of the first layer are arranged on the cast-in-place baffles. A plurality of semi-grouting sleeves are arranged at the bottom of the prefabricated baffles of the second layer. A plurality of connecting ribs corresponding to the semi-grouting sleeves are fixedly arranged at the top of the prefabricated baffles of the first layer. Mutually matching tongue-and-groove seams are also arranged between the prefabricated baffles of the first layer and the prefabricated baffles of the second layer.

7. The assembled buttress retaining wall according to claim 6, characterized in that: The semi-grouting sleeve comprises a steel bar screw, a sleeve, a grouting hole, a grouting outlet hole and an insertion port, wherein the steel bar screw is threadedly connected to one end of the sleeve, the insertion port is arranged at the other end of the sleeve, the grouting hole and the grouting outlet hole are arranged on the side wall of the sleeve, and the connecting bar can be inserted into the insertion port and extend into the interior of the sleeve; The semi-grouting sleeve is embedded in the bottom of the prefabricated baffle of the first layer and the prefabricated baffle of the second layer, and the grouting hole, the grouting hole and the plug interface are exposed outside the prefabricated baffle of the first layer and the prefabricated baffle of the second layer.

8. The assembled buttress retaining wall according to claim 2, characterized in that: A mortar groove of matching size is provided between the prefabricated buttress and the prefabricated baffle; The prefabricated buttress and the cast-in-place buttress, and the prefabricated buttress and the prefabricated baffle are all connected via threaded components; The threaded assembly includes a first bolt, a second bolt, a steel plate, and a nut. The first bolt and the second bolt are respectively arranged at the edges of the pre-connected prefabricated buttress and the cast-in-place buttress. The first bolt and the second bolt are respectively arranged at the edges of the pre-connected prefabricated buttress and the prefabricated baffle. The upper part of the steel plate is sleeved on the first bolt, and the lower part of the steel plate is sleeved on the second bolt. The nut is used to tighten the first bolt and the second bolt.

9. The assembled buttress retaining wall according to claim 8, characterized in that: The top of the cast-in-place buttress and the bottom of the prefabricated buttress are provided with mortar grooves of matching sizes, each of the prefabricated buttresses includes two layers, the prefabricated buttresses of the first layer are arranged on the cast-in-place buttresses, the top of the prefabricated buttresses of the first layer and the bottom of the prefabricated buttresses of the second layer are provided with mortar grooves of matching sizes, and the prefabricated buttresses of the first layer and the prefabricated buttresses of the second layer are connected by the threaded assembly.

10. A method for construction using the assembled buttress retaining wall according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Use concrete pouring to form a cast-in-place base plate. During the pouring process, bolts and connecting bars are embedded on the top of the cast-in-place base plate; S2, hoisting several prefabricated baffles onto the cast-in-place bottom plate, so that the semi-grouting sleeves at the bottom of the prefabricated baffles are sleeved onto the pre-buried connecting ribs at the top of the cast-in-place bottom plate; S3. Use mortar to seal the gaps at the joints. After the mortar solidifies, grout the semi-grouting sleeve with high-strength micro-expansion structural slurry; S4. Hoist several prefabricated buttresses to the cast-in-place base plate. The prefabricated buttresses are arranged perpendicular to the prefabricated baffles. The prefabricated buttresses and the cast-in-place base plate are connected by threaded components. The prefabricated buttresses and the prefabricated baffles are connected by threaded components. The gaps at the connections are sealed with mortar. S5. Install building formwork between prefabricated baffles, pour concrete, and connect several prefabricated baffles.

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