A kind of existing pipe culvert supporting type protection combination mechanism and construction method thereof

Abstract

The present invention relates to the technical field of pipeline construction, and specifically to an existing pipe culvert supporting and hanging protection combination mechanism and a construction method thereof, comprising a bracket, a surface of the bracket is provided with a limited protection structure, the limited protection structure supports and limits the position of the pipeline, and a hoisting mechanism is provided above the bracket, and the hoisting mechanism pulls and hangs the pipeline; the beneficial effect is: the existing pipe culvert supporting and hanging protection combination mechanism and the construction method thereof proposed by the present invention combine the original designed pit support structure with the pipeline protection system, and perform bottom support and top suspension protection on the pipeline crossing the large-span foundation pit. Compared with the original Bailey frame relocation protection construction, it has the characteristics of cost saving, high stability, good safety, easy construction, etc., and the structure is stable and has little impact on the construction work surface.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline construction, and in particular to an existing pipe culvert supporting and hanging type protection combination mechanism and a construction method thereof. Background Art

[0002] During foundation pit construction, in order to ensure the normal use of pipelines within the construction area and avoid deformation and settlement of pipelines, the pipelines must be relocated or protected.

[0003] In the prior art, pipeline protection across small-span foundation pits is mostly achieved by using steel sections or Bailey frame suspension protection. However, pipeline protection solutions for large-span foundation pits are more complicated and have more technical bottlenecks.

[0004] However, conventional Bailey frames require additional steel pipe piles as vertical supports, and the bottom (top) plate at the steel pipe piles needs to be waterproofed during the main construction; secondly, Bailey frame support protection is often used for pipelines with higher requirements and larger self-loads, but the Bailey frame is generally set at the bottom of the crown beam and cannot form an overall force-bearing structure, which lacks stability; thirdly, in order to maintain the stability of the Bailey frame, it is necessary to increase the number of vertical supports, which occupies the construction space and affects the foundation pit excavation and the main structure construction. Summary of the invention

[0005] The object of the present invention is to provide an existing pipe culvert supporting protection combination mechanism and a construction method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an existing pipe culvert supporting and lifting protection combination mechanism, comprising a bracket, a surface of the bracket is provided with a limited protection structure, the limited protection structure limits the position of the pipeline support, and a lifting mechanism is provided above the bracket, the lifting mechanism pulls and lifts the pipeline.

[0007] Preferably, the bracket includes newly added lattice columns, originally designed lattice columns, newly added concrete supports and originally designed concrete supports. The newly added concrete supports and originally designed concrete supports are distributed side by side, and both ends of the newly added concrete supports and originally designed concrete supports are respectively fixed on two groups of concrete structures. The newly added lattice columns and originally designed lattice columns are distributed side by side, and multiple newly added lattice columns and originally designed lattice columns are provided. Multiple newly added lattice columns are evenly fixed on the bottom surface of the newly added concrete supports, and multiple originally designed lattice columns are evenly fixed on the bottom surface of the originally designed concrete supports.

[0008] Preferably, steel corbels are provided on the surfaces of both the newly added lattice columns and the originally designed lattice columns. The steel corbels support and limit the position of the limit protection structure. The steel corbel includes a triangular plate and a steel plate. There are two groups of triangular plates, and both groups of triangular plates are fixed to the bottom surface of the steel plate. The triangular plates and the steel plate are fixed to the surfaces of the corresponding newly added lattice columns and originally designed lattice columns. The steel plates on the surfaces of the newly added lattice columns and the originally designed lattice columns are fixed to the bottom surface of the supporting beam. The supporting beam is in the shape of a "C"-shaped plate structure, and stiffening ribs are provided between the two parallel side plates of the supporting beam.

[0009] Preferably, the limit protection structure includes steel cushion blocks, hinges, arc-shaped protection steel shells, and steel bar struts. The steel cushion blocks are in the shape of a "C"-shaped plate structure. The steel cushion blocks are buckled on the top of the supporting beam. There are two groups of steel cushion blocks, and the two groups of steel cushion blocks are symmetrically distributed. An arc-shaped protection steel shell is hinged to the top surface of the close ends of the two groups of steel cushion blocks. The arc-shaped protection steel shell is in the shape of an arc-shaped plate mechanism. A steel bar strut is hinged to the top surface of the steel cushion block, and one end of the steel bar strut abuts against the outer ring surface of the arc-shaped protection steel shell for limiting.

[0010] Preferably, an edge groove is provided on the outer ring surface of the arc-shaped protection steel shell. The edge groove is in the shape of an arc-shaped groove. A plurality of retaining bars and rubber gaskets are fixed to the surface of the edge groove. The retaining bars and the rubber gaskets are distributed alternately. The height of the retaining bar is equal to the depth of the edge groove. The thickness of the rubber gasket is less than the depth of the edge groove. One end of the steel bar strut abuts against the lower side of the retaining bar and presses the rubber gasket. The other end of the steel bar strut is movably inserted with a limiting rod. The limiting rod is fixed to the inner wall of the storage groove. The storage groove is opened on the top surface of the steel cushion block. A rubber clamping block is provided at one end of the storage groove. When the steel bar strut is placed flat in the storage groove, the rubber clamping block is clamped by one end of the steel bar strut. An elastic traction belt is provided at the other end of the storage groove. One end of the elastic traction belt is fixed to the other end of the steel bar strut. In the initial state, the elastic traction belt pulls the steel bar strut out of the storage groove. Two groups of picking grooves are symmetrically opened on the top surface of the steel cushion block with respect to the storage groove.

[0011] Preferably, guide rail grooves are opened on both of the two parallel side plates of the steel cushion block. A traction slider is slidably connected inside the guide rail groove. The traction slider is in the shape of an "L"-shaped plate structure. The two groups of traction sliders are fixed to both ends of the bottom surface of the pressing piece. One end of the traction slider is fixed with a rubber cushion block. The rubber cushion block is clamped between the traction slider and the guide rail groove.拨动压片带动牵引滑块沿着导轨槽滑行,压片将钢筋支杆挤入收纳槽中,且钢垫块的顶面关于收纳槽对称设置有两组限位胶条,限位胶条对压片限位。

[0012] Preferably, two parallel side panels of the steel pad are provided with reserved openings, a clamping block is movably inserted inside the reserved opening, a rubber sheet is fixed to one end of the clamping block inserted into the steel pad groove, a trapezoidal sheet is integrally formed with the other end of the clamping block, and a through-hole is provided on the surface of the clamping block, an elastic rubber band is movably inserted inside the through-hole, and both ends of the elastic rubber band are fixed to the surface of the steel pad on both sides of the reserved opening.

[0013] Preferably, limiting columns are installed on the two parallel side plates of the steel pad, and the limiting columns are in a "T"-shaped cylindrical structure. The limiting columns movably penetrate the paddle, and a finger groove is provided on the surface of the paddle, and an embedding groove is provided on the surface of the paddle. The embedding groove and the finger groove are symmetrically distributed about the paddle, and a rubber clamp is fixed inside the embedding groove. The rubber clamp protrudes from the embedding groove and is clamped between the paddle and the steel pad to play a damping role. The paddle is rotated around the limiting column to squeeze the clamping block to limit the position.

[0014] Preferably, the lifting mechanism includes a suspension beam, a hand hoist, a lifting rope and a connecting steel ring. The suspension beam includes a double-jointed channel steel, connecting steel bars and hanging steel bars. The double-jointed channel steel is fixed to the top surfaces of the newly added concrete support and the originally designed concrete support. The connecting steel bars are fixed to the top surface of the double-jointed channel steel, and the top of the double-jointed channel steel is overlapped with the hanging steel bars. The hanging steel bars pass through the lifting ring at the top of the hand hoist. A connecting steel ring is hung on the hook of the hand hoist, and a lifting rope is fixed to the surface of the connecting steel ring.

[0015] A construction method for an existing pipe culvert supporting and hanging protection combination mechanism, the construction method comprising the following steps:

[0016] According to the design drawings, the location of the staked pile foundation is selected, and the drilling rig is moved to the location to drill holes using dry rotary drilling. After the hole inspection is completed, the steel cage, lattice column, downpipe are placed, and C30 underwater concrete is poured. The formed lattice column is composed of 460×460mm steel column and φ800mm bored pile. The pile body is 10m long. The steel column is inserted into the bored pile for 2m. The top of the lattice column is connected to the cross brace with anchor bars;

[0017] When relocating existing pipelines, the centerline of the pipeline should be measured before trench excavation. After the trench is excavated, the centerline of the pipeline should be re-measured in time, and the pipeline elevation should be reviewed. During the excavation process, the bottom elevation and width of the trench should be strictly controlled. After the pipeline is installed, it should be pressure tested, disinfected, and then watered. After confirmation, medium and coarse sand that meets the requirements should be used to backfill the pipeline in layers for compaction.

[0018] Accurately determine the plane position of the concrete support, excavate the earth on the top of the retaining pile, remove the over-filled concrete on the top of the pile to the designed pile top elevation, excavate all the soil above the concrete support bottom elevation, tie the concrete support steel bars, and after acceptance, pour the concrete support concrete. The formed concrete support is set 1m apart from the original designed concrete support, and the cross-sectional size is 800×800mm;

[0019] After excavating the earthwork at the lattice column and cleaning the working surface, the 40a channel steel joist is hoisted. The channel steel joist is firmly welded to the lattice column, and the steel bracket is welded by double-sided fillet welding. In order to increase stability, a limit protection structure is set between the pipeline and the channel steel joist. First, the steel pad is fixed on the channel steel at the expected position of the pipeline, and then the arc-shaped protective shell is hinged. After the pipeline and the protective shell are fitted, the steel support rod is set to fix the inclination of the protective shell. The support system is erected. The support system is arranged 6m at a time, and a total of 3 are arranged, which is the main load-bearing system;

[0020] After erecting three supporting structures, the soil at the suspension position was excavated, and the suspension beam was erected using 20a double-jointed channel steel above the two concrete supports. The two channel steels were welded firmly with φ8 steel bars, and a φ28 steel bar was used in the middle to hang the hand winch. A 5t sling was used for the lower lifting rope. The suspension system was arranged at intervals of 6m, and a total of 4 were arranged. This completed the construction of the existing pipe culvert support protection combination mechanism.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The existing pipe culvert supporting and hanging protection combination mechanism and the construction method proposed in the present invention combine the original designed pit support structure with the pipeline protection system, and perform bottom-supported and top-suspended protection on the pipeline crossing the large-span foundation pit. Compared with the original Bailey frame relocation protection construction, it has the characteristics of cost saving, high stability, good safety, easy construction, etc., and the structure is stable and has little impact on the construction work surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a structural side view of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the supporting system of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the suspension system;

[0027] Figure 5 It is a schematic diagram of the position limiting protection structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection structure between the steel pad and the arc-shaped protective steel shell of the present invention;

[0029] Figure 7 A half-section schematic diagram of the connection structure of the steel pad and the arc-shaped protective steel shell of the present invention;

[0030] Figure 8 This is a schematic diagram of the steel pad structure of the present invention;

[0031] Fig. 9 This is a schematic diagram of the connection structure between the traction slider and the pressing sheet of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure of the clamping block of the present invention;

[0033] Fig.11 It is a schematic diagram of the structure of the plectrum of the present invention.

[0034] In the figure: newly added lattice column 1, original design lattice column 2, joist 3, stiffening rib 4, steel corbel 5, triangle plate 51, steel plate 52, position limit protection structure 6, steel pad 61, hinge 62, arc protection steel shell 63, steel support rod 64, newly added concrete support 7, original design concrete support 8, suspension beam 9, double channel steel 91, connecting steel bar 92, hanging steel bar 93, hand hoist 10, lifting rope 11, connecting steel ring 12, side groove 13, baffle 14, rubber gasket 15, limit rod 16, storage groove 17, rubber clamp 18, pick-up groove 19, guide groove 20, traction slider 21, rubber gasket 22, pressing sheet 23, limit rubber strip 24, reserved opening 25, clamping block 26, perforation 27, elastic rubber belt 28, limit column 29, paddle 30, finger groove 31, embedded groove 32, rubber clamp 33, elastic traction belt 34. DETAILED DESCRIPTION

[0035] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0036] Embodiment 1

[0037] See also Figure 1 to Figure 2, the present invention provides a technical solution: a combined pipe culvert support and lifting protection mechanism, including a bracket. A limit protection structure 6 is arranged on the surface of the bracket. The limit protection structure 6 supports and limits the pipeline, and a lifting mechanism is arranged above the bracket to tractionally lift the pipeline; The bracket includes a newly added lattice column 1, an original designed lattice column 2, a newly added concrete support 7 and an original designed concrete support 8. The newly added concrete support 7 and the original designed concrete support 8 are arranged side by side, and the two ends of the newly added concrete support 7 and the original designed concrete support 8 are respectively fixed on two groups of concrete structures. The newly added lattice column 1 and the original designed lattice column 2 are arranged side by side, and there are multiple newly added lattice columns 1 and multiple original designed lattice columns 2. Multiple newly added lattice columns 1 are evenly fixed on the bottom surface of the newly added concrete support 7, and multiple original designed lattice columns 2 are evenly fixed on the bottom surface of the original designed concrete support 8; Steel corbels 5 are arranged on the surfaces of the newly added lattice column 1 and the original designed lattice column 2. The steel corbels 5 support and limit the limit protection structure 6. The steel corbel 5 includes a triangular plate 51 and a steel plate 52. There are two groups of triangular plates 51, and both groups of triangular plates 51 are fixed on the bottom surface of the steel plate 52. The triangular plate 51 and the steel plate 52 are fixed on the surfaces of the corresponding newly added lattice column 1 and the original designed lattice column 2. The steel plates 52 on the surfaces of the newly added lattice column 1 and the original designed lattice column 2 are fixed on the bottom surface of the supporting beam 3. The supporting beam 3 is in a "C"-shaped plate structure, and stiffening ribs 4 are arranged between the two parallel side plates of the supporting beam 3.

[0038] Embodiment 2

[0039] Refer to the appendix Figure 3 and Figure 5, on the basis of the first embodiment, in order to realize the support of the pipeline, the limit protection structure 6 includes a steel cushion block 61, a hinge 62, an arc-shaped protection steel shell 63 and a steel bar support rod 64. The steel cushion block 61 is in a "C"-shaped plate structure. The steel cushion block 61 is buckled on the top end of the supporting beam 3. There are two groups of steel cushion blocks 61, and the two groups of steel cushion blocks 61 are symmetrically distributed. The top surfaces of the adjacent ends of the two groups of steel cushion blocks 61 are hinged with an arc-shaped protection steel shell 63 through a hinge 62. The arc-shaped protection steel shell 63 is in a circular arc-shaped plate mechanism. A steel bar support rod 64 is hinged on the top surface of the steel cushion block 61. One end of the steel bar support rod 64 abuts against the outer ring surface of the arc-shaped protection steel shell 63 for limiting; an edge groove 13 is opened on the outer ring surface of the arc-shaped protection steel shell 63. The edge groove 13 is a circular arc-shaped groove. A plurality of retaining bars 14 and rubber gaskets 15 are fixed on the surface of the edge groove 13. The retaining bars 14 and the rubber gaskets 15 are distributed alternately, and the height of the retaining bar 14 is equal to the depth of the edge groove 13. The thickness of the rubber gasket 15 is less than the depth of the edge groove 13. One end of the steel bar support rod 64 abuts against the lower side of the retaining bar 14 and presses the rubber gasket 15. The other end of the steel bar support rod 64 is movably inserted with a limiting rod 16. The limiting rod 16 is fixed on the inner wall of the storage groove 17. The storage groove 17 is opened on the top surface of the steel cushion block 61. A rubber clamping block 18 is arranged at one end of the storage groove 17. When the steel bar support rod 64 is placed flat in the storage groove 17, the rubber clamping block 18 is clamped by one end of the steel bar support rod 64. A elastic traction belt 34 is arranged at the other end of the storage groove 17. One end of the elastic traction belt 34 is fixed to the other end of the steel bar support rod 64. In the initial state, the elastic traction belt 34 pulls the steel bar support rod 64 out of the storage groove 17. Two groups of picking grooves 19 are symmetrically opened on the top surface of the steel cushion block 61 with respect to the storage groove 17; guide rail grooves 20 are opened on both side plates of the steel cushion block 61 that are parallel to each other. A traction slider 21 is slidably connected inside the guide rail groove 20. The traction slider 21 is in an "L"-shaped plate structure. The two groups of traction sliders 21 are fixed at both ends of the bottom surface of the pressing piece 23. And a rubber cushion block 22 is fixed at one end of the traction slider 21. The rubber cushion block 22 is clamped between the traction slider 21 and the guide rail groove 20. By拨动 the pressing piece 23, the traction slider 21 is driven to slide along the guide rail groove 20. The pressing piece 23 squeezes the steel bar support rod 64 into the storage groove 17. And two groups of limiting rubber strips 24 are symmetrically arranged on the top surface of the steel cushion block 61 with respect to the storage groove 17. The limiting rubber strips 24 limit the pressing piece 23.

[0040] Embodiment Three

[0041] Refer to the appendix Figures 6 to 11On the basis of the second embodiment, in order to realize the fixed installation of the steel pad 61 on the joist 3, two parallel side plates of the steel pad 61 are provided with reserved openings 25, and a clamping block 26 is movably inserted inside the reserved opening 25, and a rubber sheet is fixed to one end of the clamping block 26 inserted into the groove of the steel pad 61, and a trapezoidal sheet is integrally formed at the other end of the clamping block 26, and a through hole 27 is provided on the surface of the clamping block 26, and an elastic rubber band 28 is movably inserted inside the through hole 27, and the two ends of the elastic rubber band 28 are fixed on the surface of the steel pad 61 on both sides of the reserved opening 25; the steel pad 61 Limiting columns 29 are installed on two parallel side panels, and the limiting columns 29 are of a "T"-shaped cylindrical structure. The limiting columns 29 movably penetrate the paddle 30. A finger groove 31 is provided on the surface of the paddle 30, and an embedding groove 32 is provided on the surface of the paddle 30. The embedding groove 32 and the finger groove 31 are symmetrically distributed about the paddle 30. A rubber clamp 33 is fixed inside the embedding groove 32. The rubber clamp 33 protrudes from the embedding groove 32, and the rubber clamp 33 is clamped between the paddle 30 and the steel pad 61 to play a damping role. The paddle 30 is rotated around the limiting column 29 to squeeze and limit the clamping block 26.

[0042] Embodiment 4

[0043] See attached Figure 4 On the basis of the third embodiment, in order to realize the lifting and traction of the pipeline, the lifting mechanism includes a suspension beam 9, a hand winch 10, a lifting rope 11 and a connecting steel ring 12. The suspension beam 9 includes a double-jointed channel steel 91, a connecting steel bar 92 and a hanging steel bar 93. The double-jointed channel steel 91 is fixed on the top surface of the newly added concrete support 7 and the original concrete support 8. The connecting steel bar 92 is fixed on the top surface of the double-jointed channel steel 91, and the top of the double-jointed channel steel 91 is overlapped with a hanging steel bar 93. The hanging steel bar 93 passes through the lifting ring at the top of the hand winch 10. A connecting steel ring 12 is hung on the hook of the hand winch 10, and a lifting rope 11 is fixed on the surface of the connecting steel ring 12.

[0044] Embodiment 5

[0045] A construction method for an existing pipe culvert supporting and hanging protection combination mechanism, the construction method comprising the following steps:

[0046] According to the design drawings, the location of the staked pile foundation is selected, and the drilling rig is moved to the location to drill holes using dry rotary drilling. After the hole inspection is completed, the steel cage, lattice column, downpipe are placed, and C30 underwater concrete is poured. The formed lattice column is composed of 460×460mm steel column and φ800mm bored pile. The pile body is 10m long. The steel column is inserted into the bored pile for 2m. The top of the lattice column is connected to the cross brace with anchor bars;

[0047] When relocating existing pipelines, the centerline of the pipeline should be measured before trench excavation. After the trench is excavated, the centerline of the pipeline should be re-measured in time, and the pipeline elevation should be reviewed. During the excavation process, the bottom elevation and width of the trench should be strictly controlled. After the pipeline is installed, it should be pressure tested, disinfected, and then watered. After confirmation, medium and coarse sand that meets the requirements should be used to backfill the pipeline in layers for compaction.

[0048] Accurately determine the plane position of the concrete support, excavate the earth on the top of the retaining pile, remove the over-filled concrete on the top of the pile to the designed pile top elevation, excavate all the soil above the concrete support bottom elevation, tie the concrete support steel bars, and after acceptance, pour the concrete support concrete. The formed concrete support is set 1m apart from the original designed concrete support, and the cross-sectional size is 800×800mm;

[0049] After excavating the earthwork at the lattice column and cleaning the working surface, the 40a channel steel joist is hoisted. The channel steel joist is firmly welded to the lattice column, and the steel bracket is welded by double-sided fillet welding. In order to increase stability, a limit protection structure is set between the pipeline and the channel steel joist. First, the steel pad is fixed on the channel steel at the expected position of the pipeline, and then the arc-shaped protective shell is hinged. After the pipeline and the protective shell are fitted, the steel support rod is set to fix the inclination of the protective shell. The support system is erected. The support system is arranged 6m at a time, and a total of 3 are arranged, which is the main load-bearing system;

[0050] After erecting three supporting structures, the soil at the suspension position was excavated, and the suspension beam was erected using 20a double-jointed channel steel above the two concrete supports. The two channel steels were welded firmly with φ8 steel bars, and a φ28 steel bar was used in the middle to hang the hand winch. A 5t sling was used for the lower lifting rope. The suspension system was arranged at intervals of 6m, and a total of 4 were arranged. This completed the construction of the existing pipe culvert support protection combination mechanism.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An existing pipe culvert supporting and hanging protection combination mechanism, comprising a bracket, characterized in that: A limiting and protecting structure is provided on the surface of the support. The limiting and protecting structure supports and limits the pipeline. And a hoisting mechanism is provided above the support, and the hoisting mechanism hoists and tractions the pipeline; The support includes newly added lattice columns, originally designed lattice columns, newly added concrete supports and originally designed concrete supports. The newly added concrete supports and the originally designed concrete supports are arranged side by side, and the two ends of the newly added concrete supports and the originally designed concrete supports are respectively fixed on two groups of concrete structures. The newly added lattice columns and the originally designed lattice columns are arranged side by side. Multiple newly added lattice columns are uniformly fixed on the bottom surface of the newly added concrete support, and multiple originally designed lattice columns are uniformly fixed on the bottom surface of the originally designed concrete support; Steel corbels are provided on the surfaces of the newly added lattice columns and the originally designed lattice columns. The steel corbels support and limit the limiting and protecting structure. The steel corbel includes a triangular plate and a steel plate. There are two groups of triangular plates, and both groups of triangular plates are fixed on the bottom surface of the steel plate. And the triangular plates and the steel plate are fixed on the surfaces of the corresponding newly added lattice columns and originally designed lattice columns. The steel plates on the surfaces of the newly added lattice columns and the originally designed lattice columns are all fixed on the bottom surface of the bearing beam; The limiting and protecting structure includes a steel cushion block, a hinge, an arc-shaped protective steel shell and a steel bar support rod. The steel cushion block is in a "C"-shaped plate structure. The steel cushion block is buckled on the top end of the bearing beam. There are two groups of steel cushion blocks, and the two groups of steel cushion blocks are symmetrically distributed. The top surfaces of the close ends of the two groups of steel cushion blocks are hinged with an arc-shaped protective steel shell through a hinge. The arc-shaped protective steel shell is in a circular arc-shaped plate mechanism. A steel bar support rod is hinged on the top surface of the steel cushion block. One end of the steel bar support rod abuts against the outer ring surface of the arc-shaped protective steel shell for limiting; An edge groove is opened on the outer ring surface of the arc-shaped protective steel shell. The edge groove is in a circular arc-shaped groove. Multiple blocking strips and rubber gaskets are fixed on the surface of the edge groove. The blocking strips and the rubber gaskets are distributed alternately. And the height of the blocking strip is equal to the depth of the edge groove. The thickness of the rubber gasket is less than the depth of the edge groove. One end of the steel bar support rod abuts against the lower side of the blocking strip and squeezes the rubber gasket. The other end of the steel bar support rod is movably inserted with a limiting rod. The limiting rod is fixed on the inner wall of the storage groove. The storage groove is opened on the top surface of the steel cushion block. A rubber clamping block is arranged at one end of the storage groove. When the steel bar support rod is placed flat in the storage groove, the rubber clamping block is clamped by one end of the steel bar support rod. An elastic traction belt is arranged at the other end of the storage groove. One end of the elastic traction belt is fixed on the other end of the steel bar support rod. In the initial state, the elastic traction belt pulls the steel bar support rod out of the storage groove. Two groups of picking grooves are symmetrically opened on the top surface of the steel cushion block with respect to the storage groove.

2. According to claim 1, the existing pipe culvert supporting and hanging protection combination mechanism is characterized in that: Guide rail grooves are opened on both of the two parallel side plates of the steel cushion block. A traction slider is slidably connected inside the guide rail groove. The traction slider is in an "L"-shaped plate structure. The two groups of traction sliders are fixed at both ends of the bottom surface of the pressing piece. And a rubber cushion block is fixed at one end of the traction slider. The rubber cushion block is clamped between the traction slider and the guide rail groove.拨动压片带动牵引滑块沿着导轨槽滑行,压片将钢筋支杆挤入收纳槽中,且钢垫块的顶面关于收纳槽对称设置有两组限位胶条,限位胶条对压片限位,托梁呈"匚”字形板状结构,托梁的两个平行分布的侧板之间设置有加劲肋。 3. The existing pipe culvert supporting and hanging protection combined mechanism according to claim 1 is characterized in that: The two parallel side panels of the steel pad are each provided with a reserved opening, a clamping block is movably inserted inside the reserved opening, a rubber sheet is fixed to one end of the clamping block inserted into the steel pad groove, a trapezoidal sheet is integrally formed with the other end of the clamping block, and a through-hole is provided on the surface of the clamping block, an elastic rubber belt is movably inserted inside the through-hole, and both ends of the elastic rubber belt are fixed to the surface of the steel pad on both sides of the reserved opening.

4. The existing pipe culvert supporting and hanging protection combined mechanism according to claim 3 is characterized in that: The two parallel side plates of the steel pad are both installed with limiting columns, which are in a "T"-shaped cylindrical structure. The limiting columns movably penetrate the paddle, and the surface of the paddle is provided with a finger groove, and the surface of the paddle is provided with an embedding groove. The embedding groove and the finger groove are symmetrically distributed about the paddle, and a rubber clamp is fixed inside the embedding groove. The rubber clamp protrudes from the embedding groove, and the rubber clamp is clamped between the paddle and the steel pad to play a damping role. The paddle is rotated around the limiting column to squeeze and limit the clamping block.

5. The existing pipe culvert supporting and hanging protection combined mechanism according to claim 1 is characterized in that: The lifting mechanism includes a suspension beam, a hand hoist, a lifting rope and a connecting steel ring. The suspension beam includes a double-jointed channel steel, connecting steel bars and hanging steel bars. The double-jointed channel steel is fixed to the top surfaces of the newly added concrete support and the originally designed concrete support. The connecting steel bars are fixed to the top surface of the double-jointed channel steel, and the top of the double-jointed channel steel is overlapped with the hanging steel bars. The hanging steel bars pass through the lifting ring at the top of the hand hoist. A connecting steel ring is hung on the hook of the hand hoist, and a lifting rope is fixed to the surface of the connecting steel ring.

6. A construction method of an existing pipe culvert supporting and protecting combined mechanism as described in any one of claims 1 to 5, characterized in that: The construction method comprises the following steps: According to the design drawings, the location of the staked pile foundation is selected, and the drilling rig is moved to the location to drill holes using dry rotary drilling. After the hole inspection is completed, the steel cage, lattice column, downpipe are placed, and C30 underwater concrete is poured. The formed lattice column is composed of 460×460mm steel column and φ800mm bored pile. The pile body is 10m long. The steel column is inserted into the bored pile for 2m. The top of the lattice column is connected to the cross brace with anchor bars; When relocating existing pipelines, the centerline of the pipeline should be measured before trench excavation. After the trench is excavated, the centerline of the pipeline should be re-measured in time, and the pipeline elevation should be reviewed. During the excavation process, the bottom elevation and width of the trench should be strictly controlled. After the pipeline is installed, it should be pressure tested, disinfected, and then watered. After confirmation, medium and coarse sand that meets the requirements should be used to backfill the pipeline in layers for compaction. Accurately determine the plane position of the concrete support, excavate the earth on the top of the retaining pile, remove the over-filled concrete on the top of the pile to the designed pile top elevation, excavate all the soil above the concrete support bottom elevation, tie the concrete support steel bars, and after acceptance, pour the concrete support concrete. The formed concrete support is set 1m apart from the original designed concrete support, and the cross-sectional size is 800×800mm; After excavating the earthwork at the lattice column and cleaning the working surface, the 40a channel steel joist is hoisted. The channel steel joist is firmly welded to the lattice column, and the steel bracket is welded by double-sided fillet welding. In order to increase stability, a limit protection structure is set between the pipeline and the channel steel joist. First, the steel pad is fixed on the channel steel at the expected position of the pipeline, and then the arc-shaped protective shell is hinged. After the pipeline and the protective shell are fitted, the steel support rod is set to fix the inclination of the protective shell. The support system is erected. The support system is arranged every 6m, and a total of 3 are arranged, which is the main load-bearing system; After erecting three supporting structures, the soil at the suspension position was excavated, and the suspension beam was erected using 20a double-jointed channel steel above the two concrete supports. The two channel steels were welded firmly with φ8 steel bars, and a φ28 steel bar was used in the middle to hang the hand winch. A 5t sling was used for the lower lifting rope. The suspension system was arranged at intervals of 6m, and a total of 4 were arranged. This completed the construction of the existing pipe culvert support protection combination mechanism.

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