Auxiliary system for positioning and installing lattice columns and its construction method

Abstract

This invention provides an auxiliary system and construction method for positioning and installing lattice columns. The auxiliary system includes a guide frame and a positioning mechanism. The guide frame can be nested and inserted into the lattice column and is detachably connected to it. The guide frame includes a positioning frame and multiple first positioning blocks fixed to the outside of the positioning frame. The positioning mechanism controls the center deviation and verticality of the lattice column by adjusting the center deviation and verticality of the guide frame. The positioning mechanism includes a hollow rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the orifice size through which the guide frame passes. The orifice is located within the rectangular frame, and its size matches the size of the positioning frame. The multiple first positioning blocks are located on and abut against the rectangular frame. By using this auxiliary system to install lattice columns, the positioning difficulty of ultra-long hollow lattice columns is reduced, the positioning operation time is effectively shortened, and the positioning effect is stable and reliable.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to an auxiliary system and its construction method for positioning and installing lattice columns. Background Technology

[0002] With the rapid development of urban construction, subways, maglev trains, and other rail transit systems are being planned and constructed in major cities, leading to a surge in deep foundation pit projects related to subway or maglev stations. Whether using the cut-and-cover method or the open-cut method, foundation pit excavation should adhere to the principle of "support before excavation." When multiple internal supports are used for foundation pit protection, lattice columns must be installed to prevent excessive deformation of the first concrete support due to excessive bending moment. This improves the bending resistance of the support components and ensures the overall stability of the foundation pit support system. The orientation and verticality of the lattice columns directly determine their service quality; therefore, accurate positioning of the lattice columns naturally becomes one of the key aspects of foundation pit construction.

[0003] Currently, in the positioning and construction of lattice columns, the commonly used methods for installation and vertical adjustment include the airbag method, the straightening frame method, and the guide sleeve method. Among these, the airbag method is limited by the airbags, resulting in a generally large distance between the lattice column and the borehole wall, which weakens the vertical adjustment effect. The guide sleeve method involves placing a guide sleeve outside the lattice column, which inevitably enlarges the borehole diameter. The straightening frame method can only be used for support columns with high stiffness. Since the stiffness of lattice columns is relatively low, it is difficult to control bending deformation when torque is applied to the upper part, which is not conducive to vertical adjustment. At the same time, longer lattice columns and longer empty piles will increase the difficulty of guiding, positioning, and vertical adjustment. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary system and construction method for positioning and installing lattice columns. Using this auxiliary system to install lattice columns reduces the difficulty of positioning ultra-long empty pile lattice columns, effectively shortens the positioning time, and provides a stable and reliable positioning effect.

[0005] To achieve the above objectives, the present invention provides an auxiliary system for positioning and installing lattice columns, the auxiliary system comprising:

[0006] A guide frame is capable of being nested and inserted into the lattice column and detachably connected to the lattice column. The guide frame includes a positioning frame extending along the length direction of the lattice column and connected to the lattice column, and a plurality of first positioning blocks fixed to the outside of the positioning frame. The plurality of first positioning blocks are located at the same horizontal height and installed at the upper end of the positioning frame.

[0007] A positioning mechanism is provided to control the center deviation and verticality of the lattice column by adjusting the center deviation and verticality of the guide frame. The positioning mechanism includes a hollow rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the orifice size through which the guide frame passes. The orifice is located inside the rectangular frame, and the orifice size matches the size of the positioning frame. A plurality of first positioning blocks are located on the rectangular frame and abut against the rectangular frame.

[0008] In one specific embodiment, the adjustment mechanism includes two positioning rods whose two ends are respectively connected to the two sides of the rectangular frame and are parallel to the first axis of symmetry of the rectangular frame. The two positioning rods are respectively disposed on both sides of the first axis of symmetry and the distance between them can be adjusted. The two positioning rods respectively abut against the two ends of the top of the positioning frame.

[0009] In one specific embodiment, the adjustment mechanism further includes two adjustment components located between the two positioning rods and symmetrically arranged about a second axis of symmetry of the rectangular frame. The second axis of symmetry is perpendicular to the first axis of symmetry. Each adjustment component includes an adjustment nut fixedly installed on the rectangular frame, a top rod passing through the adjustment nut and threadedly connected to the adjustment nut, and a limiting plate installed at the end of the top rod and fixedly connected to the top rod. The top rod is arranged parallel to the positioning rod, and the two limiting plates abut against the two sides of the top of the positioning frame, respectively.

[0010] In one specific embodiment, the rectangular frame includes two first support rods arranged opposite each other and two second support rods whose ends are respectively connected to the two first support rods and arranged opposite each other. The two first support rods and the two second support rods are staggered and connected together to form the rectangular frame. The two ends of the two positioning rods are respectively connected to the two first support rods.

[0011] In one specific embodiment, the rectangular frame further includes two long threaded holes formed on each of the first support rods. The two long threaded holes are symmetrically arranged about a first axis of symmetry of the rectangular frame, and the extension direction of the two long threaded holes is the same as the extension direction of the first support rod. Each positioning rod also includes round threaded holes at both ends. The adjustment mechanism further includes four connecting bolts, each of which passes through the round threaded holes and the long threaded holes in sequence to connect the positioning rod to the first support rod.

[0012] In one specific embodiment, the first positioning block includes a first positioning block body and a first positioning groove formed by recessing the first positioning block body inward from the surface away from the positioning frame. The positioning rod has a through hole at the position opposite to the first positioning groove. The auxiliary system also includes a first bolt, the nut of the first bolt abutting against the first positioning block and its screw passing through the first positioning groove and the through hole in sequence to connect with the lattice column, so as to connect the guide frame, the positioning mechanism and the lattice column.

[0013] In one specific embodiment, the guide frame further includes a plurality of limiting blocks installed on the outside of the positioning frame and located below the first positioning block. The plurality of limiting blocks and the plurality of first positioning blocks are arranged in a one-to-one correspondence. Each limiting block includes a limiting block body and a limiting groove formed by recessing the surface of the limiting block body away from the positioning frame. The limiting groove is used for the first bolt to pass through. When the lattice column is installed, the lower surfaces of the plurality of limiting blocks abut against the lattice column.

[0014] In one specific embodiment, the positioning frame includes four spaced-apart first angle steels and multiple first gusset plates. The four first angle steels are arranged symmetrically in pairs to form a columnar structure with a rectangular cross-section. The multiple first gusset plates are spaced apart along the length of the first angle steels. Each first gusset plate includes four first gusset plates for connecting two adjacent first angle steels. The number of first positioning blocks is four, and the four first positioning blocks are respectively installed on the outside of the four first gusset plates in the uppermost first gusset plate group.

[0015] In one specific implementation, the number of limiting blocks is four, and the four limiting blocks are respectively installed on the outside of the four first lacing plates in the target first lacing plate group. The target first lacing plate group is one of a plurality of first lacing plate groups between the uppermost first lacing plate group and the lowermost first lacing plate group.

[0016] The present invention also provides a construction method for the auxiliary system described above, comprising the following steps:

[0017] (1) Level and compact the site surface, and measure and lay out the lines;

[0018] (2) Lay roadbed boxes or steel plates, position the drilling equipment, lower the steel casing, and complete the drilling construction of the column piles;

[0019] (3) After drilling is completed, clean up the mud, soil and other debris around the borehole, and lay out the lines according to the extension lines of the midpoints of the four sides of the lattice column;

[0020] (4) Install a positioning mechanism at the orifice and adjust the four jacks of the positioning mechanism so that the level bubble on the positioning mechanism is centered;

[0021] (5) Hoist and lower the steel cage. When the steel cage is lowered to the opening position, lower the lattice column and make the lattice column extend 3m into the steel cage.

[0022] (6) After flexibly connecting the lattice column and the steel cage, lower the whole structure;

[0023] (7) After lowering the lattice column to the target elevation, insert the guide frame at the upper end of the lattice column and connect the guide frame to the lattice column with the first bolt, and then lower the whole column until the steel cage contacts the bottom of the hole;

[0024] (8) Use the positioning mechanism to correct the center position and vertical attitude of the guide frame and the lattice column, and fix the guide frame after the adjustment is completed;

[0025] (9) Lowering the catheter and secondary cleaning of the hole;

[0026] (10) Pouring underwater concrete;

[0027] (11) Backfill with sand and gravel;

[0028] (12) Remove the guide frame and positioning mechanism.

[0029] The beneficial effects of the present invention include at least the following:

[0030] I. This invention provides an auxiliary system for positioning and installing lattice columns. The auxiliary system includes a guide frame and a positioning mechanism. The guide frame can be nested into the lattice column and detachably connected to it. The guide frame includes a positioning frame and a plurality of first positioning blocks fixed to the outside of the positioning frame. The positioning mechanism is used to control the center deviation and verticality of the lattice column by adjusting the center deviation and verticality of the guide frame. The positioning mechanism includes a hollow rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the orifice size through which the guide frame passes. The orifice is located inside the rectangular frame. Furthermore, the orifice size matches the size of the positioning frame, and multiple first positioning blocks are located on and abut against the rectangular frame. Thus, the lattice column connected to the reinforcing cage is first lowered through the rectangular frame, and then the lattice column is connected to the positioning frame of the guide frame using first bolts. The entire column is lowered to the target position, where the first positioning block of the guide frame is positioned on the positioning mechanism. The center position of the lattice column is corrected by adjusting the positional deviation and verticality of the guide frame at the orifice position. Once the requirements are met, the lattice column is fixed. By using this auxiliary system to install the lattice column, the positioning difficulty of ultra-long empty pile lattice columns is reduced, effectively shortening the positioning operation time, and the positioning effect is stable and reliable.

[0031] II. The positioning mechanism of the present invention includes a rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the size of the orifice through which the guide frame passes. The verticality of the lattice column can be adjusted by the four jacks, so that the lattice column is in a vertically suspended state, ensuring verticality and horizontal position. The size of the orifice can be adjusted by the adjustment mechanism to adjust the angle and precise position of the lattice column, and it can be applied to the installation and positioning of lattice columns of various sizes.

[0032] 3. The guide frame includes a positioning frame extending along the length of the lattice column body, and multiple first positioning blocks and multiple limiting blocks installed on the outside of the positioning frame. The first positioning blocks have first positioning grooves, and the limiting blocks have limiting grooves. Correspondingly, when modifying the structure of the lattice column, multiple positioning components corresponding to the multiple first positioning blocks and multiple limiting blocks are provided on the outside of the lattice column body. Each positioning component includes a connecting column with threaded holes. When installing the lattice column, the positioning frame is inserted into the lattice column body, and the lower surfaces of the multiple limiting blocks abut against the top of the lattice column body. The nut of the first bolt abuts against the first positioning block, and the bolt passes through the first positioning groove and the limiting groove in sequence, inserts into the connecting column, and is threadedly connected to the connecting column to disassemble and connect the lattice column and the guide frame. In this way, by positioning and adjusting the guide frame located at the orifice, the positioning and adjustment of the lattice column can be completed. On the one hand, it can solve the guiding problem caused by the inconsistent length of the hollow pile and the inconsistent column top elevation in related technologies. On the other hand, after the lattice column is positioned and installed, the guide frame can be detached from the lattice column, so that the guide frame can be reused.

[0033] Fourth, both the positioning mechanism and the guide frame adopt a modular and reusable design. After its promotion, it can reduce amortization costs and lower project investment, resulting in good economic benefits.

[0034] 5. The positioning frame and the lattice column body are connected by the first bolt to facilitate installation and disassembly.

[0035] VI. The limiting block is detachably connected to the first gusset plate, and the limiting block can be installed on the first gusset plate at different heights. In this way, the length of the positioning frame inserted into the lattice column body can be changed to match the installation of lattice columns of different lengths and different empty pile lengths and different column top elevations, which has the advantage of wide application range.

[0036] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0037] Figure 1This is a three-dimensional structural diagram of the connection between the guide frame and the positioning mechanism in an auxiliary system provided by an embodiment of the present invention;

[0038] Figure 2 This is a three-dimensional structural diagram showing the connection between the auxiliary system, guide frame, and reinforcing cage provided in an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] Detailed Implementation

[0041] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be limited to and covered by various different embodiments according to the claims.

[0042] Please see Figure 1 and Figure 2 The present invention provides an auxiliary system 100 for positioning and installing lattice columns. The auxiliary system 100 is used to position and lower the lattice column 400 after it is flexibly connected to the steel cage 500.

[0043] In this embodiment, the flexible connection between the reinforcing cage 500 and the lattice column 400 means that after the reinforcing cage 500 and the lattice column 400 are connected, their positions are not completely fixed. The lattice column 400 can also rotate around the central axis of the reinforcing cage 500 to adjust the angle between them, so as to control the installation deviation of the lattice column 400. Specifically, it can be connected by bearings.

[0044] The auxiliary system 100 includes a positioning mechanism 10, a guide frame 20, and a first bolt 30 for connecting the guide frame 20 and the lattice column 400. The positioning mechanism 10 is used to control the displacement deviation of the lattice column 400 during installation. The guide frame 20 is used to nest with the lattice column 400 to facilitate the control of the verticality of the lattice column 400. Using the auxiliary system 100 of the present invention to install the lattice column 400 has the advantages of good installation quality, with rotation angle <3°, verticality deviation <1 / 400, and precise control of the elevation of the pile bottom and column top. It has the advantages of stable and reliable positioning effect, and effectively shortens the positioning operation time and reduces the positioning difficulty.

[0045] The positioning mechanism 10 is used to control the center deviation and verticality of the lattice column 400 by adjusting the center deviation and verticality of the guide frame 20.

[0046] The positioning mechanism 10 includes a hollow rectangular frame 11, four jacks 12 installed at the bottom of the four corners of the rectangular frame 11, and an adjustment mechanism 13 for adjusting the size of the orifice through which the guide frame 20 passes. The orifice is located inside the frame of the rectangular frame 11, and the size of the orifice matches the size of the guide frame 20.

[0047] Preferably, the positioning mechanism 10 is a modular design, with each component being detachably connected, facilitating assembly and disassembly.

[0048] The rectangular frame 11 includes two first support rods 111 arranged opposite to each other and two second support rods 112 that are connected to the two first support rods 111 at both ends and arranged opposite to each other. The two first support rods 111 and the two second support rods 112 are staggered and connected together to form the rectangular frame 11.

[0049] In this embodiment, the rectangular frame 11 is a square.

[0050] Preferably, the connection between the first support rod 111 and the second support rod 112 is a detachable connection, such as a bolt connection, which facilitates assembly and disassembly.

[0051] The four jacks 12 are respectively located at the bottom of the four corners of the rectangular frame 11 to adjust the verticality of the lattice column, so that the lattice column is in a vertically suspended state, ensuring verticality and horizontal position.

[0052] The adjustment mechanism 13 is used to adjust the size of the orifice to adjust the angle and precise position of the lattice column, and can be applied to the installation and positioning of lattice columns of various sizes.

[0053] The adjustment mechanism 13 includes two positioning rods 131 whose ends are respectively connected to the two sides of the rectangular frame 11 and are parallel to the first axis of symmetry of the rectangular frame 11; two adjusting members 132 located between the two positioning rods 131 and symmetrically arranged about the second axis of symmetry of the rectangular frame 11; and four connecting bolts 133 for connecting the positioning rods 131 and the rectangular frame 11. The first axis of symmetry and the second axis of symmetry are arranged perpendicularly.

[0054] In this embodiment, the two positioning rods 131 are respectively disposed on both sides of the first axis of symmetry of the rectangular frame 11 and the distance between them can be adjusted to adjust the size of the opening in the Y direction and match the lattice columns of different sizes.

[0055] In this embodiment, when installing the lattice column 400, the two positioning rods 131 are symmetrically arranged about the first axis of symmetry of the rectangular frame 11 to control the center deviation of the lattice column 400 within a reasonable range.

[0056] In this embodiment, Figure 1 The X direction shown corresponds to both sides of the rectangular frame 11. Figure 1 The Y direction shown corresponds to the two ends of the rectangular frame 11.

[0057] The first axis of symmetry of the rectangular frame 11 is parallel to the X direction; the second axis of symmetry of the rectangular frame 11 is parallel to the Y direction.

[0058] Preferably, the rectangular frame 11 further includes two long threaded holes 113 formed on each of the first support rods 111. The two long threaded holes 113 are symmetrically arranged about a first axis of symmetry of the rectangular frame, and the extension direction of the two long threaded holes 113 is the same as the extension direction of the first support rod 111. Each positioning rod 131 also includes round threaded holes at both ends thereon. Each connecting bolt 133 passes through the round threaded holes and the long threaded holes 113 in sequence to connect the positioning rod 131 to the first support rod 111.

[0059] Moving the positioning rod 131 along the long threaded hole 113 toward the adjusting member 132 reduces the distance between the two positioning rods 131. Moving the positioning rod 131 along the long threaded hole 113 away from the adjusting member 132 increases the distance between the two positioning rods 131.

[0060] In this embodiment, the two positioning rods 131 abut against the two ends of the top of the guide frame 20, respectively.

[0061] Each of the adjusting components 132 includes an adjusting nut 1321 fixedly installed on the rectangular frame 11, a top rod 1322 passing through the adjusting nut 1321 and threadedly connected to the adjusting nut 1321, and a limiting plate 1323 installed at the end of the top rod 1322 and fixedly connected to the top rod 1322. The top rod 1322 is arranged parallel to the positioning rod 131, and the two limiting plates 1323 respectively abut against the two sides of the top of the guide frame 20.

[0062] By rotating the top rod 1322 clockwise or counterclockwise, the length of the top rod 1322 extending into the rectangular frame 11 can be changed to adjust the size of the opening in the X direction.

[0063] In this embodiment, the adjusting nut 1321 is mounted on the second support rod 112.

[0064] The main body shape of the guide frame 20 is similar to that of the lattice column 400, both being rectangular column structures. The main difference is that the size of the guide frame 20 is smaller than that of the lattice column 400, and the guide frame 20 can be inserted into the lattice column 400.

[0065] The guide frame 20 includes a positioning frame 21 extending along the length of the lattice column 400, and a plurality of first positioning blocks 22 and a plurality of limiting blocks 23 installed on the outside of the positioning frame 21. The plurality of first positioning blocks 22 are located above the plurality of limiting blocks 23, and the number of first positioning blocks 22 and the number of limiting blocks 23 are the same. The plurality of first positioning blocks 22 and the plurality of limiting blocks 23 are arranged in a one-to-one correspondence.

[0066] It should be noted that the one-to-one correspondence between the multiple first positioning blocks 22 and the multiple limiting blocks 23 refers to the one-to-one correspondence between their positions. It can be understood that a limiting block 23 is set below each of the first positioning blocks 22.

[0067] The positioning frame 21 includes four spaced first angle steels 211 and a plurality of first connecting plate groups 212. The four first angle steels 211 are arranged in pairs symmetrically to form a columnar structure with a rectangular cross section. The plurality of first connecting plate groups 212 are spaced along the length direction of the first angle steels 211. Each first connecting plate group 212 includes four first connecting plates 2121 for connecting two adjacent first angle steels.

[0068] In this embodiment, the first angle steel 211 is an L-shaped angle steel.

[0069] Preferably, each of the first angle steels 211 is provided with a lifting hole 2111 at its upper end, and the four lifting holes 2111 of the four first angle steels 211 are arranged symmetrically in pairs.

[0070] By providing a lifting hole 2111, it is convenient to use a crane to lift the guide frame 20 out after it is separated from the lattice column 400.

[0071] In this embodiment, the first lacing plate 2121 is a rectangular structure. The two ends of the first lacing plate 2121 are respectively connected to the outer side of the adjacent first angle steel 211. Multiple first lacing plates 2121 located on the same side are distributed at intervals along the length direction of the first angle steel, and the central axis of the width direction of multiple first lacing plates 2121 on the same side is located on the same straight line.

[0072] The central axis in the width direction refers to the central axis parallel to the shorter wide side of the first gusset plate 2121.

[0073] In this embodiment, the first gusset plate 2121 is fixedly installed to the side of the first angle steel 111 by welding, and the adjacent first angle steels 211 are fixedly connected together.

[0074] In this embodiment, there are four first positioning blocks 22. The four first positioning blocks 22 are respectively installed on the outside of the four first lacing plates 2121 in the uppermost first lacing plate group 212. When positioning and installing the lattice column 400, two first positioning blocks 22 arranged opposite to each other along the Y direction are respectively located on the positioning rod 131 and the two are abutted against each other.

[0075] The first positioning block 22 includes a first positioning block body portion 221 and a first positioning groove 222 formed by recessing the first positioning block body portion 221 inward from the surface away from the positioning frame 21. The first positioning groove 222 is used for the first bolt 30 to pass through.

[0076] The first positioning block body 221 is a rectangular block structure.

[0077] In this embodiment, the first positioning groove 222 is a U-shaped groove that penetrates the upper and lower surfaces of the first positioning block 22, and its U-shaped opening faces away from the positioning frame 21.

[0078] The limiting block 23 is used to abut against the upper end of the lattice column 400 to determine the relative position of the positioning frame 21 and the lattice column 400.

[0079] The number of limiting blocks 23 is four. The four limiting blocks 23 are respectively installed on the outside of the four first lacing plates in the target first lacing plate group. The target first lacing plate group is one of the multiple first lacing plate groups between the uppermost first lacing plate group and the lowermost first lacing plate group. It can be understood that the four limiting blocks 23 can be installed on any first lacing plate group between the uppermost first lacing plate group and the lowermost first lacing plate group according to actual needs, such as the second or third lacing plate group from the top.

[0080] By adjusting the installation position of the limiting block 23, the depth to which the positioning frame 21 is inserted into the lattice column 400 can be changed to match the installation of lattice columns of different lengths and empty piles of different lengths and column top elevations, thus making the guide frame 20 more reusable.

[0081] It should be noted that the limiting block 23 can also be fixedly installed on the outside of one of the first gusset plates. This solution does not affect the use of the guide frame provided by the present invention for guidance and positioning, nor does it affect the reuse of the guide frame. However, when the guide frame is reused, it is preferred to be used for lattice columns with a specific range of column lengths.

[0082] In this embodiment, the four limiting blocks 23 are respectively installed on the outside of the four first lacing plates of the fourth first lacing plate group 212 from top to bottom.

[0083] In this embodiment, the limiting block 23 includes a limiting block body 231, a limiting groove 232 formed by recessing from the surface of the limiting block body 231 away from the positioning frame 21, and a through hole 233 provided through the limiting block body 231 along the thickness direction of the limiting block body 231. The limiting groove 232 is used for the first bolt 30 to pass through. The limiting groove 232 located on the same side is directly opposite to the first positioning groove 222 of the first positioning block 22. The first bolt 30 passes through both at the same time, which facilitates positioning.

[0084] In this embodiment, the cross-section of the limiting block body 231 is an arc-shaped structure, so that the thickness in the middle of the limiting block body 231 is greater than the thickness on both sides, which facilitates the installation of the second bolt for fixing the limiting block 23 and the first connecting plate 2121.

[0085] In this embodiment, the limiting groove 232 is a U-shaped groove that penetrates the upper and lower surfaces of the limiting block 23, and its U-shaped opening faces away from the positioning frame 21.

[0086] Preferably, the limiting block 23 is detachably connected to the first gusset plate 2121.

[0087] More preferably, the limiting block 23 is threadedly connected to the first gusset plate 2121.

[0088] Specifically, each of the four first plates in the first plate group (target plate group) between the uppermost and lowermost first plate groups has two mounting holes 212A. The two mounting holes 212A correspond one-to-one with the two through holes 233. The guide frame also includes a plurality of second bolts 24. The second bolts 24 are inserted into the through holes 233 and the mounting holes 212A in sequence to thread the first plate 2121 to the limiting block 23.

[0089] In this embodiment, there are four first bolts 30, which are respectively installed on the four sides of the guide frame 20. The first bolts 30 are long bolts.

[0090] The lattice column 400 includes a lattice column body 40 and a plurality of positioning components 50 installed on the outside of the lattice column body 40. The plurality of positioning components 50 are used to connect with the guide frame 20.

[0091] The shape of the lattice column body 40 is the same as that of the positioning frame 21, both being rectangular column structures, and the size of the positioning frame 21 is smaller than that of the lattice column body 40.

[0092] In this embodiment, the cross-sectional dimensions of the lattice column body 40 are 550mm*550mm.

[0093] In this embodiment, the positioning frame 21 is nested inside the lattice column body 40, which extends the length of the lattice column. The positioning frame 21 is set at the opening, so the verticality of the positioning frame 21 can be adjusted at the opening, thereby controlling the verticality of the lattice column.

[0094] The positioning frame 21 is nested inside the lattice column body 40. This can be understood as the central axis of the lattice column body 40 and the central axis of the positioning frame 21 being on the same straight line, the lateral symmetry plane of the lattice column body 40 and the lateral symmetry plane of the positioning frame 21 being on the same plane, and the longitudinal symmetry plane of the lattice column body 40 and the longitudinal symmetry plane of the positioning frame 21 being on the same plane.

[0095] The lattice column body 40 includes four spaced second angle steels 41 and multiple second gusset plates 42. The four second angle steels 41 are arranged in pairs symmetrically to form a column structure with a rectangular cross section. The multiple second gusset plates 42 are spaced along the length of the second angle steels 41. Each second gusset plate 42 includes four second gusset plates 421 for connecting two adjacent second angle steels 41.

[0096] In this example, the second angle steel 41 is an L-shaped angle steel.

[0097] In this embodiment, the two ends of the second lacing plate 421 are respectively connected to the outer side of the adjacent second angle steel 41. Multiple second lacing plates 421 located on the same side are distributed at intervals along the length direction of the second angle steel 41, and the central axis of the width direction of multiple second lacing plates 421 on the same side is located on the same straight line.

[0098] The central axis in the width direction refers to the central axis parallel to the shorter wide side of the second gusset plate 421.

[0099] In this embodiment, the second gusset plate 421 is fixedly installed to the side of the second angle steel 41 by welding, and the adjacent second angle steels 41 are fixedly connected together.

[0100] In this embodiment, when the positioning frame 21 is inserted into the lattice column body 40, the second gusset plate 421 on the same side is parallel to the first gusset plate 2121.

[0101] In this embodiment, there are four positioning components 50, which is the same as the number of the first positioning block 22 and the limiting block 23. The four positioning components 50 correspond one-to-one with the four first positioning blocks 22, and the four positioning components 50 correspond one-to-one with the four limiting blocks 23. That is, a positioning component 50, a first positioning block 22 and a limiting block 23 are respectively provided on the four sides of the rectangular columnar structure.

[0102] The four positioning components 50 are respectively installed on the four second gusset plates 421 of the second gusset plate group 42 near the upper end of the second angle steel 41, that is, one positioning component 50 is installed on each side of the second gusset plate 421.

[0103] In other embodiments, the number of positioning components 50 may be two or three, and correspondingly, the number of first positioning blocks 22 and limiting blocks 23 may also be two or three. Relatively speaking, the positioning effect will be worse than that of four positioning components 50, but positioning can still be achieved.

[0104] The positioning component 50 includes a connecting post 51 and a second positioning block 52. The connecting post 51 has an internal threaded hole and can be threadedly connected to the first bolt 30.

[0105] In this embodiment, the second positioning block 52 is installed at the middle position of the second gusset plate 421, and the connecting post 51 is installed below the second positioning block 52.

[0106] In this embodiment, the second positioning block 52 includes a second positioning block body portion 521 and a second positioning groove 522 formed by recessing the second positioning block body portion 521 inward from the surface away from the lattice column body 40. The second positioning groove 522 is used for the first bolt 30 to pass through. The second positioning groove 522 located on the same side is directly opposite the limiting groove 232. The nut of the first bolt 30 abuts against the first positioning block 22, and the bolt passes through the first positioning groove 222, the through hole of the positioning rod 131, the limiting groove 232, and the second positioning groove 522 in sequence, and is inserted into the connecting column 51 and threadedly connected to the connecting column 51.

[0107] In this embodiment, the second positioning groove 522 is a U-shaped groove that penetrates the upper and lower surfaces of the second positioning block 52, and its U-shaped opening faces away from the lattice column body 40.

[0108] Preferably, the second positioning block 52 is detachably connected to the second gusset plate 421, so that after the lattice column body is installed, the second positioning block 52 can be disassembled and recycled.

[0109] More preferably, the second positioning block 52 is threadedly connected to the second gusset plate 421 by correspondingly opening holes for thread installation on the body portion 521 of the second positioning block and the second gusset plate 421.

[0110] In this embodiment, the cross-section of the second positioning block body 521 is an arc-shaped structure. Thus, the thickness in the middle of the second positioning block body 521 is greater than the thickness on both sides. Holes for mounting threads are opened on both sides, and bolts with shorter screws can be selected for easy disassembly.

[0111] The present invention also provides a construction method for installing lattice columns using an auxiliary system, comprising the following steps:

[0112] Step (1): Level and compact the site surface, and measure and lay out the lines;

[0113] Step (2): Lay the roadbed box or steel plate, position the drilling equipment, lower the steel casing, and complete the drilling construction of the column pile;

[0114] Step (3): After drilling is completed, clean up the mud and soil around the borehole and lay out the lines according to the extension lines of the midpoints of the four sides of the lattice column.

[0115] Step (4): Install the positioning mechanism at the orifice and adjust the four jacks of the positioning mechanism so that the level bubble on the positioning mechanism is centered.

[0116] Step (5): Hoist and lower the steel cage. When the steel cage is lowered to the opening position, lower the lattice column and make the lattice column extend 3m into the steel cage.

[0117] Step (6): After flexibly connecting the lattice column and the steel cage, lower the whole structure.

[0118] Step (7): After lowering the lattice column to the target elevation, insert the guide frame at the upper end of the lattice column and connect the guide frame to the lattice column with the first bolt, and then lower the whole column until the steel cage contacts the bottom of the hole.

[0119] The target elevation here can be understood as the position at which the lattice column is lowered a certain distance, making it convenient for construction workers to install the guide frame and connect the lattice column to the guide frame.

[0120] Step (8): Use the positioning mechanism to correct the center position and vertical attitude of the guide frame and the lattice column, and fix the guide frame after the adjustment is completed;

[0121] Step (9): Lower the catheter and perform secondary cleaning;

[0122] Step (10): Pour underwater concrete;

[0123] Step (11) Backfill with gravel;

[0124] Step (12): Remove the guide frame and positioning mechanism.

[0125] Using the auxiliary system provided by this invention, and following the construction method described above, the construction of 86 lattice columns has the advantage of precise positioning compared to traditional positioning techniques:

[0126] I. The installation quality of the lattice columns has been significantly improved, specifically in that: the rotation angle is all <3°, the verticality deviation is all <1 / 400, and the elevation of the pile bottom and the column top is also precisely controlled.

[0127] Second, the introduction of positioning mechanisms and guide frames reduces the difficulty of positioning ultra-long hollow pile grid columns, effectively shortens the positioning operation time, and ensures stable and reliable positioning results.

[0128] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions and substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An auxiliary system for positioning and installing lattice columns, characterized in that, The auxiliary system is used to position and lower the lattice column after it is flexibly connected to the reinforcing cage. The auxiliary system includes: A guide frame is capable of being nested and inserted into the lattice column and detachably connected to the lattice column. The guide frame includes a positioning frame extending along the length direction of the lattice column and nested and connected to the lattice column, and a plurality of first positioning blocks fixed to the outside of the positioning frame. The plurality of first positioning blocks are located at the same horizontal height and installed at the upper end of the positioning frame. A positioning mechanism is provided to control the center deviation and verticality of the lattice column by adjusting the center deviation and verticality of the guide frame. The positioning mechanism includes a hollow rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the size of the orifice through which the guide frame passes. The orifice is located within the frame of the rectangular frame, and the size of the orifice matches the size of the positioning frame. The adjustment mechanism includes two positioning rods connected to the two sides of the rectangular frame at both ends and parallel to the first axis of symmetry of the rectangular frame, and two adjusting members located between the two positioning rods and symmetrically arranged about the second axis of symmetry of the rectangular frame. The second axis of symmetry is perpendicular to the first axis of symmetry. The distance between the two positioning rods is adjustable, and adjusting the distance between the two positioning rods changes the size of the orifice in the Y direction. The distance between the two adjusting members is adjustable, and adjusting the distance between the two adjusting members changes the size of the orifice in the X direction. The first positioning block includes a first positioning block body and a first positioning groove formed by recessing the first positioning block body surface away from the positioning frame. The positioning rod has a through hole at the position opposite to the first positioning groove. The auxiliary system also includes a first bolt. The nut of the first bolt abuts against the first positioning block and its screw passes through the first positioning groove and the through hole in sequence to connect with the lattice column, so as to connect the guide frame, the positioning mechanism and the lattice column. The guide frame also includes a plurality of limiting blocks installed on the outside of the positioning frame and located below the first positioning block. The plurality of limiting blocks and the plurality of first positioning blocks are arranged in a one-to-one correspondence. Each limiting block includes a limiting block body and a limiting groove formed by recessing inward from the surface of the limiting block body away from the positioning frame. The limiting groove is used for the first bolt to pass through. When the lattice column is installed, the lower surfaces of the plurality of limiting blocks abut against the lattice column. When the positioning mechanism is used to correct the center position and vertical attitude of the guide frame and the lattice column, the two adjusting members abut against the two sides of the guide frame, and the two first positioning blocks arranged opposite each other along the Y direction are respectively located on the two positioning rods, and the first positioning blocks abut against the positioning rods.

2. The auxiliary system for positioning and installing lattice columns according to claim 1, characterized in that, Each of the adjusting components includes an adjusting nut fixedly installed on the rectangular frame, a top rod passing through the adjusting nut and threadedly connected to the adjusting nut, and a limiting plate installed at the end of the top rod and fixedly connected to the top rod. The top rod is arranged parallel to the positioning rod, and the two limiting plates abut against the two sides of the top of the positioning frame, respectively.

3. The auxiliary system for positioning and installing lattice columns according to claim 2, characterized in that, The rectangular frame includes two first support rods arranged opposite each other and two second support rods whose ends are respectively connected to the two first support rods and arranged opposite each other. The two first support rods and the two second support rods are staggered and connected to form the rectangular frame. The two ends of the two positioning rods are respectively connected to the two first support rods.

4. The auxiliary system for positioning and installing lattice columns according to claim 3, characterized in that, The rectangular frame further includes two long threaded holes formed on each of the first support rods. The two long threaded holes are symmetrically arranged about the first axis of symmetry of the rectangular frame, and the extension direction of the two long threaded holes is the same as the extension direction of the first support rod. Each positioning rod also includes round threaded holes at both ends. The adjustment mechanism also includes four connecting bolts. Each connecting bolt passes through the round threaded holes and the long threaded holes in sequence to connect the positioning rod to the first support rod.

5. The auxiliary system for positioning and installing lattice columns according to claim 1, characterized in that, The positioning frame includes four spaced-apart first angle steels and multiple first gusset plates. The four first angle steels are arranged symmetrically in pairs to form a columnar structure with a rectangular cross-section. The multiple first gusset plates are spaced apart along the length of the first angle steels. Each first gusset plate includes four first gusset plates for connecting two adjacent first angle steels. There are four first positioning blocks, and the four first positioning blocks are respectively installed on the outside of the four first gusset plates in the uppermost first gusset plate group.

6. The auxiliary system for positioning and installing lattice columns according to claim 5, characterized in that, The number of limiting blocks is four, and the four limiting blocks are respectively installed on the outside of the four first lacing plates in the target first lacing plate group. The target first lacing plate group is one of the multiple first lacing plate groups between the uppermost first lacing plate group and the lowermost first lacing plate group.

7. A construction method for the auxiliary system according to any one of claims 1 to 6, characterized in that, Includes the following steps: (1) Level and compact the site surface, and measure and lay out the lines; (2) Lay roadbed boxes or steel plates, position the drilling equipment, lower the steel casing, and complete the drilling construction of the column piles; (3) After drilling is completed, clean up the mud and soil around the borehole and lay out the lines according to the extension lines of the midpoints of the four sides of the lattice column; (4) Install a positioning mechanism at the orifice and adjust the four jacks of the positioning mechanism so that the level bubble on the positioning mechanism is centered; (5) Hoist and lower the steel cage. When the steel cage is lowered to the opening position, lower the lattice column and make the lattice column extend 3m into the steel cage. (6) After flexibly connecting the lattice column and the steel cage, lower the whole structure; (7) After lowering the lattice column to the target elevation, insert the guide frame at the upper end of the lattice column and connect the guide frame to the lattice column with the first bolt, and then lower the whole column until the steel cage contacts the bottom of the hole; (8) Use the positioning mechanism to correct the center position and vertical attitude of the guide frame and the lattice column, and fix the guide frame after the adjustment is completed; (9) Lowering the catheter and secondary cleaning of the hole; (10) Pouring underwater concrete; (11) Backfill with sand and gravel; (12) Remove the guide frame and positioning mechanism.

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