Supporting system of piling platform for steep slope row pile supporting construction

Abstract

The utility model relates to a supporting system of a piling platform for steep slope row pile support construction, which comprises steel columns including a front row of steel columns and a rear row of steel columns which are sequentially arranged along a slope from high to low; the cross beams comprise short cross beams arranged at the tops of the front-row steel columns and long cross beams arranged at the tops of the rear-row steel columns; the inclined struts are connected between the upper parts of the rear-row steel columns and the lower parts of the adjacent rear-row steel columns so as to ensure the lateral stability; adjusting steel plates are arranged between the front-row steel columns and the short cross beams in a cushioned mode, and elevation adjusters are arranged between the rear-row steel columns and the long cross beams. The supporting system of the steep slope row pile supporting construction piling platform is convenient to erect, stable in structure and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a supporting system for a piling platform for steep slope pile support construction. Background Art

[0002] In the construction of buildings or roads near the mountains, slope support is often involved. Considering factors such as land occupation, it may be possible to use piles combined with anchor cables for support. Because of its superior force-bearing performance, piles are more suitable for various types of high slopes in combination with anchor cables. However, in the construction of piles supporting high and steep slopes with poor construction conditions, it is difficult to implement due to the construction conditions of high and steep slopes and the limitations of pile driving equipment. In the construction of piles supporting soil slopes, the slope piling equipment generally uses crawler equipment, such as excavators, crawler cranes, and rotary drilling rigs. Construction roads need to be built, but the weight of rotary drilling rigs is heavier, reaching more than 100 tons. During the piling process, a large earth platform needs to be used to meet the working surface requirements of the piling equipment. As a supporting structure, piles are generally located at the edge of the red line of the project. If the slope is high, the workload of filling earth is very large, which is easy to exceed the red line of the project and cause damage to the surrounding forests or facilities. Utility Model Content

[0003] The utility model aims to provide a support system for a piling platform for steep slope pile support construction which is easy to set up, has a stable structure and is highly practical, so as to meet the needs of setting up a piling platform in a complex environment.

[0004] The technical solution of the utility model is a support system for a pile driving platform for steep slope pile support construction, including:

[0005] The steel columns include a front row of steel columns and a rear row of steel columns arranged in sequence from high to low along the slope;

[0006] A crossbeam, comprising a short crossbeam arranged on the top of the front row steel column and a long crossbeam arranged on the top of the rear row steel column;

[0007] A diagonal brace connected between the upper portion of the rear row steel column and the lower portion of the adjacent rear row steel column to ensure lateral stability;

[0008] Among them, an adjusting steel plate is arranged between the front steel column and the short cross beam, and a height adjuster is arranged between the rear steel column and the long cross beam.

[0009] Preferably, the steel column is located above the slope surface and is installed with a horizontal bearing assembly near the slope surface, the horizontal bearing assembly includes a horizontal beam and soil nails, the horizontal beam is fixed to the steel column, the soil nails are hollow structures, the front end of which is provided with an opening and a barb, and the rear end is fixed to the horizontal beam, the soil nails are obliquely pressed into the side of the steel column and inserted into the slope, and pressure grouting is performed through the opening to form pull-out resistance.

[0010] Preferably, the soil nails are inclined downward at an angle α of 15-25 degrees in the vertical direction, and are inclined outward at an angle β of 15-25 degrees in the horizontal direction.

[0011] Preferably, four front-row steel columns are arranged side by side at intervals, with two in each group, and two groups of front-row steel columns are symmetrically arranged on both sides of the pile position, and one of the short crossbeams is fixed on the top of each group of front-row steel columns.

[0012] Preferably, two rear row steel columns are arranged side by side at intervals, and one of the long cross beams is fixed on the tops of the two rear row steel columns.

[0013] Preferably, the rear row of steel columns is composed of an upper steel column and a lower steel column connected by a first flange joint.

[0014] Preferably, a diagonal brace is connected between the upper steel column and the lower steel column adjacent thereto.

[0015] Preferably, the upper steel column is provided with ladder steps.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] ⑴ The support system is used to achieve steep slope piling, without the need to set up a huge piling platform, thus avoiding the impact on the surrounding environment of the construction.

[0018] ⑵The support system can be installed step by step, and the material cost does not require too much investment, which can effectively reduce the construction cost.

[0019] ⑶ The overall stability of the support system can be guaranteed through the coordination of steel columns, beams, diagonal braces and horizontal load-bearing components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the piling platform for steep slope pile support construction;

[0021] Figure 2 It is a structural diagram of the support system;

[0022] Figure 3 yes Figure 2 Structural diagram of the middle and rear row of steel columns;

[0023] Figure 4yes Figure 2 A top view of

[0024] Figure 5 yes Figure 1 A top view of the connection between the middle platform body and the platform slab;

[0025] Figure 6 yes Figure 1 Another top view of the connection between the middle platform body and the platform slab;

[0026] Figure 7 It is a construction diagram of a piling platform for steep slope pile support construction;

[0027] Figure 8 yes Figure 7 Structural diagram of middle steel column installation;

[0028] Fig. 9 This is another construction diagram of the piling platform for steep slope pile support construction;

[0029] Fig.10 This is another construction diagram of the piling platform for steep slope pile support construction;

[0030] Fig.11 yes Fig.10 Schematic diagram from another angle.

[0031] Main component symbols:

[0032] Support system 1; steel column 11; front steel column 111; rear steel column 112; upper steel column 1121; lower steel column 1122; first flange joint 1123; ladder step 1124; crossbeam 12; short crossbeam 121; long crossbeam 122; diagonal brace 13; adjusting steel plate 14; elevation adjuster 15; horizontal bearing assembly 16; horizontal beam 161; soil nail 162; vibrating hammer 17; pile driver sleeve 18; second flange joint 19;

[0033] Platform body 2; first working area 21; Bailey beam 22; lateral support 221; platform plate 23; distribution beam 231; first steel plate 232; U-bolt 233; first guardrail 24; first lifting ring 25;

[0034] Platform slab 3; first end 31; second end 32; bottom plate 321; end cover plate 322; gap 323; second working area 33; slope beam 34; second steel plate 35; second lifting ring 36; second guardrail 37;

[0035] Slope 4;

[0036] Cast-in-place piles 5;

[0037] Pile driver 6;

[0038] Steel casing 7. DETAILED DESCRIPTION

[0039] The utility model will be further described below in conjunction with the accompanying drawings:

[0040] See also Figures 1 to 4 As shown, the utility model provides a support system for a pile driving platform for steep slope pile support construction. The support system 1 is buried on the slope 4, and its lower part is inserted into the slope 4, and the upper weight is supported by the friction with the slope; the support system 1 includes: a steel column 11 and a crossbeam 12 arranged on the top of the steel column 11, the steel column 11 is the foundation of the support platform body 2, the upper part of which supports the crossbeam 12, and the lower part is inserted into the slope 4, and the upper weight is supported by the friction between the steel column 11 and the slope 4, and the steel column 11 includes a front row of steel columns 111 and a rear row of steel columns 111 arranged in sequence from high to low along the slope 4. A rear row of steel columns 112; a diagonal brace 13 is connected between the upper part of the rear row of steel columns 112 and the lower part of the adjacent rear row of steel columns 112 to ensure lateral stability; the crossbeam 12 includes a short crossbeam 121 arranged on the top of the front row of steel columns 111 and a long crossbeam 122 arranged on the top of the rear row of steel columns 112; an adjusting steel plate 14 is padded between the front row of steel columns 111 and the short crossbeam 121, and an elevation adjuster 15 is arranged between the rear row of steel columns 112 and the long crossbeam 122. By installing the adjusting steel plate 14 and the elevation adjuster 15, the elevation adjustment of the platform body 2 before installation is performed.

[0041] See also Figure 1 , Figure 4 As shown, the front row steel columns 111 are slightly higher than the slope surface of the slope 4, four front row steel columns 111 are arranged side by side, and each two form a group, avoiding the pile position. The two groups of front row steel columns 111 are symmetrically arranged on both sides of the pile position, and a short cross beam 121 is fixed to the top of each group of front row steel columns 111; the rear row steel columns 112 are much higher than the slope surface of the slope 4, and two rear row steel columns 112 are arranged side by side, and a long cross beam 122 is fixed to the top of the two rear row steel columns 112.

[0042] See also Figure 2 , Figure 3 As shown, the rear steel column 112 is composed of an upper steel column 1121 and a lower steel column 1122 connected by a first flange joint 1123, and the diagonal brace 13 is connected between the upper steel column 1121 and the lower steel column 1122 adjacent thereto; the upper steel column 1121 is provided with a ladder step 1124, which is used as a pedestrian passage for upper platform installation and hoisting. During the height adjustment process of the rear steel column 112, personnel operate up and down through the ladder step 1124.

[0043] In this embodiment, the rear row steel column 112 is divided into two parts, an upper part and a lower part. The lower part is the original front row steel column, and the upper part becomes the rear row steel column through an extension method, and the extension method is connected through a flange joint.

[0044] See also Figure 1 , Figure 4 As shown, the steel column 11 is located above the slope surface 4 and is installed with a horizontal bearing assembly 16 near the slope surface 4. The horizontal bearing assembly 16 includes a horizontal beam 161 and a soil nail 162. The horizontal beam 161 is arranged at the lower part of the steel column 11. The horizontal beam 161 is supported by a support plate welded on the steel column 11, and the horizontal beam 161 is welded to the steel column 11. The horizontal beam on the front row of steel columns 111 is shorter to avoid the pile position; the soil nail 162 is a hollow structure and can be made of a hollow steel pipe. The front end of the soil nail 162 is provided with an opening and a barb, and the rear end is fixed to the horizontal beam 161. The soil nail 162 is tilted and pressed into the side of the steel pipe steel column 11 and inserted into the slope 4. Pressure grouting is performed through the opening to form a pull-out resistance to prevent the steel column 11 from tipping outward or to the sides.

[0045] The prepared steel flower pipe soil nails 162 are pressed into the side of the steel pipe steel column 11 by using equipment such as an excavator, and the angle is adjusted during the pressing process, such as Figure 3 As shown, the soil nail 162 is inclined downward at an angle α of 15-25 degrees in the vertical direction, and as shown in FIG. Figure 4 As shown, the soil nail 162 is inclined outwardly at an angle β of 15-25 degrees along the horizontal direction.

[0046] In this embodiment, the prepared steel flower pipe soil nail 162 is pressed into the side of the steel pipe steel column 11 by using equipment such as an excavator. The angle is adjusted during the pressing process. The downward tilt angle α of the soil nail 162 in the vertical direction is 15 degrees, and the outward tilt angle β in the horizontal direction is 15 degrees.

[0047] See also Figures 1 to 11 As shown, the utility model also provides a steep slope pile support construction piling platform using the support system 1, the platform also includes: a platform body 2 and a platform cladding 3; the platform body 2 is fixed to the top of the support system 1, and is used to carry the slope piling equipment; the platform body 2 is provided with a first working area 21 for piling, the first working area 21 is arranged opposite to the pile position, and the pile driver 6 located on the platform body 2 performs drilling and piling operations on the slope below the platform body 2 through the first working area 21; the platform cladding 3 is arranged between the platform body 2 and the slope 4 The platform sheathing 3 has a first end 31 and a second end 32 relative to each other. The first end 31 is close to the platform body 2, and its bottom is fixed to the top of the support system 1. The second end 32 is set on the slope 4. The platform sheathing 3 is set to connect the slope 4 and the platform body 2, so that the slope piling equipment can be easily moved from the slope 4 to the platform body 2. The platform sheathing 3 is provided with a second working area 33 for piling. The second working area 33 is arranged opposite to the pile position. The pile driver 6 drills and piles the slope below the platform sheathing 3 through the second working area 33.

[0048] See also Figure 1 , Figure 5 , Figure 6 As shown, the platform body 2 includes: a Bailey beam 22 and a platform plate 23. The Bailey beam 22 is composed of a plurality of Bailey plates connected together and is used as the main beam of the platform body 2. The Bailey beam 22 is mounted on the top of the support system 1. Specifically, the Bailey beam 22 is mounted on the cross beam 12 of the support system 1. The Bailey beam 22 close to the front steel column 111 is mounted on the short cross beam 121, and the Bailey beam 22 close to the rear steel column 112 is mounted on the long cross beam 122, and is fixed longitudinally and laterally. The Bailey beam 22 includes multiple sections. The Bailey beam segments are connected in sequence, and the adjacent Bailey beam segments are connected by lateral supports 221; the platform plate 23 includes a distribution beam 231 spaced apart on the upper part of the Bailey beam 22 and a first steel plate 232 laid on the distribution beam 231, and the distribution beam 231 is fixed to the Bailey beam 22 by U-bolts 233; a first guardrail 24 is provided on the platform plate 23, and a first lifting ring 25 is welded on the distribution beam 231. By providing the first lifting ring 25, the platform plate 2 can be hoisted, installed and removed as a whole.

[0049] like Figure 5 , Figure 6 As shown, two platform plates 23 are provided, and the two platform plates 23 are symmetrically arranged on both sides of the pile position, so that a first working area 21 is formed between the two platform plates 23, and the first working area 21 extends along the direction of the pile position. The width of the first working area 21 is the distance between the two platform plates 23, and the distance is 200-300 mm larger than the pile diameter of the cast-in-place pile 5.

[0050] In this embodiment, the platform plane is centered on the pile position, and steel platforms are arranged on both sides. The gap in the middle of the platform is 200-300mm larger than the pile diameter of the cast-in-place pile 5. Before piling, a steel casing 7 is set in the middle of the platform and then drilling is performed.

[0051] See also Figure 1 , Figure 5 , Figure 6 As shown, the platform sheathing 3 includes a slope beam 34 and a second steel plate 35 laid on the slope beam 34. The slope beam 34 is made of steel sections and is formed as a whole through transverse connection. The top of the slope beam 34 is paved with a steel plate. The first end 31 of the platform sheathing 3 is laid on the short cross beam 121 of the support system 1, and the second end 32 is laid on the natural foundation of the slope. It should be noted that the slope foundation is excavated in advance according to the position and elevation.

[0052] See also Figure 5 , Figure 6As shown, there are two platform planks 3, which are symmetrically arranged on both sides of the pile position, so that a second working area 33 is formed between the two platform planks 3, and the second working area 33 extends along the direction of the pile position. The width of the second working area 33 is the distance between the two platform planks 3, which is 200-300mm larger than the pile diameter of the cast-in-place pile 5.

[0053] See also Figure 1 As shown, a steel plate as a bottom plate 321 is provided at the bottom of the second end 32 of the platform sheathing 3 to increase the stress-bearing area of ​​the natural foundation of the slope, and a steel plate as an end sealing plate 322 is provided on the side of the end of the second end 32 for sealing. By using steel plates to seal the end and the bottom of the second end 32, the platform sheathing 3 and the slope 4 are used as support points; a gap 323 is formed between the second end 32 and the slope 4, and a passage is formed by backfilling the gap 323; a second lifting ring 36 is provided on the upper slope beam 34 of the platform sheathing 3 for overall lifting; a second guardrail 37 is provided on the outer side of the platform sheathing 3 away from the pile position.

[0054] See also Figures 7 to 11 As shown in the figure, the construction method of the piling platform for steep slope pile support construction has the following specific implementation steps:

[0055] (I) Install the lower support system 1

[0056] 1. Install steel pipe and steel column 11

[0057] The position where the steel pipe steel column 11 needs to be installed is pointed out to determine the position of the steel pipe steel column 11 and the ground height difference between the front row steel column 111 and the rear row steel column 112; Figures 7 and 8 As shown, a crane is used in combination with a steel pipe and steel column vibrating hammer 17 to pile the steel pipe and steel column 11, as shown in FIG. Figure 4 As shown, two rear steel columns 112 are driven, and four front steel columns 111 are driven, with two in each group, avoiding the pile positions; before piling, the steel pipe and steel column vibrating hammer 17 clamps the pile driving sleeve 18, and the pile driving sleeve 18 is connected to the top of the steel column 11 through the second flange joint 19;

[0058] 2. Press in soil nails 162 to fix steel column 11

[0059] Use excavators and other equipment to press the prepared steel pipe soil nails 162 into the side of the steel pipe steel column 11. The sides of the front steel column 111 and the rear steel column 112 are all pressed into the steel pipe soil nails 162. Adjust the angle during the pressing process. Figure 3 As shown, the soil nail 162 is inclined downward at an angle α of 15 degrees in the vertical direction, and as shown in FIG. Figure 4 As shown, the angle β of the horizontal outward inclination is 15 degrees. After being pressed in, the steel flower pipe is filled with cement slurry using a grouting pipe to form a pull-out resistance to prevent the steel pipe steel column 11 from tipping outward or to the sides;

[0060] 3. Extend the rear steel column 112 and adjust the height of steel column 11

[0061] After being driven to the designated elevation and grouting of the steel flower pipe soil nails 162 is completed, the rear row steel column 112 is extended by connecting the flange joint 1123, so that the rear row steel column 112 is composed of an upper steel column 1121 and a lower steel column 1122 connected by the flange joint 1123; after the extension, the pile top elevations of the front row steel column 111 and the rear row steel column 112 are adjusted, the front row steel column 111 is adjusted by placing an adjustment steel plate 14, and the rear row steel column 112 is adjusted by an elevation adjuster 15; a ladder step 1124 is installed on the upper part of the rear row steel column 112, and during the adjustment of the elevation of the rear row steel column 112, personnel perform up and down operations through the ladder step 1124;

[0062] 4. Install diagonal brace 13

[0063] Connect the diagonal braces 13 of the rear steel columns 112, and install the diagonal braces 13 between the upper steel column 1121 of the rear steel column 112 and the lower steel column 1122 adjacent thereto to ensure lateral stability;

[0064] 5. Install horizontal beam 161

[0065] Install the horizontal beam 161 at the position of the front row steel column 111 close to the slope surface. The horizontal beam 161 of the front row steel column 111 is shorter and avoids the pile position. Install the horizontal beam 161 at the position of the lower steel column 1122 of the rear row steel column 112 close to the slope surface. After the installation of the horizontal beam 161 is completed, tie the horizontal beam 161 to the soil nail 162 at the opposite position.

[0066] 6. Install the beam 12

[0067] A short cross beam 121 is installed on the top of the front steel column 111, and a long cross beam 122 is installed on the top of the rear steel column 112 and fixed.

[0068] (II) Install the upper platform body 2

[0069] 1. Assemble Bailey beam 22

[0070] On a flat ground, several Bailey plates and transverse supports 221 are assembled in sequence to form a Bailey beam 22;

[0071] 2. Welding platform plate 23

[0072] A steel distribution beam 231 is laid on the Bailey beam 22, and the distribution beam 231 is connected to the Bailey sheet by using U-bolts 233;

[0073] A first steel plate 232 is laid on the distribution beam 231, and the side surface of the first steel plate 232 is welded to the contact point of the distribution beam 231;

[0074] A first guardrail 24 and a first lifting ring 25 are welded on both sides of the distribution beam 231;

[0075] 3. Install the platform body 2

[0076] The Bailey beam 22 and the platform plate 23 are assembled and welded to form an integral steel platform body 2. A total of two steel platform bodies 2 need to be welded.

[0077] A crane is used to hoist two steel platform bodies 2 onto the lower support system 1 through the first hoisting ring 25. The two steel platform bodies 2 are arranged on both sides with the pile position as the axis, so that a first operation area 21 for piling is formed between the two steel platform bodies 2. The first operation area 21 extends along the direction of the pile position. The width of the first operation area 21 is the distance between the two steel platform bodies 2, which is 200-300 mm larger than the pile diameter of the cast-in-place pile 5.

[0078] After the position is adjusted, the steel platform body 2 is fixed on the short beam 121 and the long beam 122. During the adjustment process on the short beam 121 side, the personnel stand on the slope, and on the long beam 122 side, the personnel stand on the ladder steps 1124 of the rear steel columns 112.

[0079] (III) Install the upper platform slab 3

[0080] 1. Assemble the platform planks 3

[0081] On a flat site, steel sections are welded into a slope beam 34, and the slope beam 34 is connected into a whole through transverse connection;

[0082] A second steel plate 35 is laid on the top of the slope beam 34, and the end and bottom of the second end 32 erected on the slope 4 are sealed with a steel plate, serving as a support point between the platform slab 3 and the slope, and the bottom uses a steel plate as a base plate, which can increase the force-bearing area of ​​the natural foundation;

[0083] Welding a second lifting ring 36 and a second guardrail 37 on the steel section of the platform slab;

[0084] 2. Install the platform board 3

[0085] The above-mentioned slope beam 34 and the second steel plate 35 are assembled and welded to form an integral platform slat 3. A total of two platform slats 3 need to be welded.

[0086] A crane is used to hoist the two platform planks 3 as a whole between the platform body 2 and the slope through the second hoisting ring 36. The two platform planks 3 are arranged on both sides with the pile position as the axis, so that a second working area 33 for piling operation is formed between the two platform planks 3. The second working area 33 extends along the direction of the pile position. The width of the second working area 33 is the distance between the two platform planks 3, which is 200-300mm larger than the pile diameter of the cast-in-place pile 5.

[0087] After the position is adjusted, the first end 31 of the platform slab 3 is close to the platform body 2, and the bottom of the first end 31 is fixed on the short crossbeam 121 of the lower support system 11, and the second end 32 is set on the land foundation of the slope 4. It should be noted that the land foundation is excavated in advance according to the position and elevation;

[0088] After the installation is completed, the gap 323 between the side slope 4 and the end of the platform slab 3 is backfilled to form a channel.

[0089] (IV) Piling

[0090] The pile driver 6 is installed on the platform body 2, and a hole is drilled by the pile driver 6, such as Fig. 9 As shown, a steel casing 7 is set in the first working area 21 in the middle of the platform body 2, the lower part of the steel casing 7 is installed in the hole drilled by the pile driver 6, and the upper part of the steel casing 7 is fixed to the platform body 2 to ensure the verticality of the steel casing 7;

[0091] The pile driver 6 drills and piles through the steel casing 7. After the drilling and emptying are completed, the steel cage is placed by a crawler crane, and the concrete is poured by a pump truck to form a cast-in-place pile 5;

[0092] The pile driver 6 drives the pile directly below the platform body 2, and then turns around. Fig.10 , Fig.11 As shown, to the end position of the platform slab 3 and the front row of steel columns 111, the piles directly below the platform slab 3 are constructed through the second working area 33 on the platform slab 3.

[0093] (V) Dismantling the platform

[0094] After the piles under the platform body 2 and the platform slab 3 are driven, the pile driver 6 moves away from the platform body 2;

[0095] Use a crawler crane to dismantle the platform slab 3 and the platform body 2 as a whole, then dismantle the short crossbeam 121 and the long crossbeam 122, and then dismantle the upper steel column 1121 of the rear row of steel columns 112;

[0096] A crawler crane combined with a steel pipe and steel column vibrating hammer 17 and a pile driver 18 is used to remove the two rear steel columns 112 and the two front steel columns 111 close to the pile position, and the two front steel columns 111 far from the pile position are retained, thus completing the demolition of the platform in this construction section;

[0097] (VI) Set up the next construction section platform

[0098] The two front-row steel columns retained in step (V) are used as the rear-row steel columns 112 of the next construction section, and four more front-row steel columns are installed as the front-row steel columns 111 of the next construction section;

[0099] Referring to the operation of step (a), press the steel pipe soil nails 162 into the side of the steel pipe steel column and complete the grouting, lengthen and level the rear row steel column 112, install the diagonal braces 13 of the rear row steel column 112, install the horizontal beam 161, tie the horizontal beam 161 to the soil nails 162, and install the short beam 121 and the long beam 122.

[0100] Referring to the operation of step (ii), the assembled platform body 2 is hoisted as a whole onto the lower support system 1 and fixed; referring to the operation of step (iii), the assembled upper platform slab 3 is hoisted as a whole and fixed, and the gap between the slope 4 and the first end 31 of the platform slab 3 is backfilled to form a channel. After the installation is completed, the piling operation of this construction section is carried out.

[0101] In this embodiment, the piling construction work of the N construction section is completed according to step (1) to step (4), the demolition of the N construction section is completed according to step (5), and then the N+1 construction section is set up on the basis of the two front steel columns left in the N section according to step (6), and the piling of the N+1 construction section is carried out;

[0102] Repeat the above steps to carry out the construction of subsequent construction sections such as N+2 and N+3.

[0103] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A support system for a piling platform for steep slope pile support construction, characterized in that: include: The steel columns include a front row of steel columns and a rear row of steel columns arranged in sequence from high to low along the slope; A crossbeam, comprising a short crossbeam arranged on the top of the front row steel column and a long crossbeam arranged on the top of the rear row steel column; A diagonal brace connected between the upper portion of the rear row steel column and the lower portion of the adjacent rear row steel column to ensure lateral stability; Among them, an adjusting steel plate is arranged between the front steel column and the short cross beam, and a height adjuster is arranged between the rear steel column and the long cross beam.

2. The support system of the piling platform for steep slope pile support construction according to claim 1 is characterized in that: The steel column is located above the slope surface and is installed with a horizontal bearing component close to the slope surface. The horizontal bearing component includes a horizontal beam and soil nails. The horizontal beam is fixed to the steel column. The soil nail is a hollow structure with an opening and a barb at the front end and a rear end fixed to the horizontal beam. The soil nail is obliquely pressed into the side of the steel column and inserted into the slope, and pressure grouting is performed through the opening to form pull-out resistance.

3. The support system of the piling platform for steep slope pile support construction according to claim 2 is characterized in that: The soil nails are inclined downward at an angle α of 15-25 degrees in the vertical direction, and are inclined outward at an angle β of 15-25 degrees in the horizontal direction.

4. The support system of the piling platform for steep slope pile support construction according to claim 1 is characterized in that: Four front-row steel columns are arranged side by side at intervals, with two columns forming a group. Two groups of front-row steel columns are symmetrically arranged on both sides of the pile position, and one short crossbeam is fixed on the top of each group of front-row steel columns.

5. The support system of the piling platform for steep slope pile support construction according to claim 1 is characterized in that: Two rear steel columns are arranged side by side at intervals, and one long crossbeam is fixed on the top of the two rear steel columns.

6. The support system of the piling platform for steep slope pile support construction according to claim 1 is characterized in that: The rear row of steel columns is composed of an upper steel column and a lower steel column connected by a first flange joint.

7. The support system of the piling platform for steep slope pile support construction according to claim 6 is characterized in that: The diagonal brace is connected between the upper steel column and the lower steel column adjacent thereto.

8. The support system of the piling platform for steep slope pile support construction according to claim 6, characterized in that: The upper steel column is provided with ladder steps.

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