An integrated support mechanism for a thin-walled hollow pier

Abstract

The present invention belongs to the technical field of bridge construction, and discloses an integrated support mechanism for a thin-walled hollow pier, which includes steel pipe columns, distribution beams and tie rods. A plurality of steel pipe columns are arranged at intervals on both sides and in the middle of the thin-walled hollow pier to be poured along the bridge length direction; a plurality of distribution beams are distributed at intervals in the long axis direction of the steel pipe columns and fixedly connected to the plurality of steel pipe columns; both ends of the tie rod are respectively connected to the ends of two distribution beams on both sides at the same height, and the tie rod is located at both ends of the thin-walled hollow pier along the bridge width direction. By arranging a plurality of steel pipe columns on both sides and in the middle of the thin-walled hollow pier along the bridge length direction and connecting distribution beams between the plurality of steel pipe columns, the relative strength between the tie rods can be increased, and the lateral deformation of the formwork and steel pipe columns can be reduced or avoided; tie rods are arranged between the distribution beams, and the tie rods are located at both ends of the thin-walled hollow pier along the bridge width direction, which does not affect the design service life of the thin-walled hollow pier.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to an integrated supporting mechanism for a thin-walled hollow bridge pier. Background Art

[0002] In the existing bridge construction, thin-walled hollow piers with continuous steel structures are usually used for larger spans. The full-frame support method is used in the conventional construction of thin-walled hollow piers. For situations where the construction site is small and the conventional full-frame support method is not available, a special support mechanism must be used. The lateral pressure of thin-walled hollow piers during concrete pouring will cause deformation of the formwork, especially the higher the height of concrete pouring, the more obvious the deformation of the formwork; and the tension screws will remain inside the pouring body during the pouring process, affecting the design service life of the pier. Summary of the invention

[0003] The purpose of the present invention is to provide an integrated support mechanism for thin-walled hollow bridge piers to solve the limitation problem of tie rods in resisting lateral pressure and the influence of tie rods on the design service life of thin-walled hollow bridge piers.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] An integrated supporting mechanism for a thin-walled hollow bridge pier, comprising:

[0006] A steel pipe column, wherein a plurality of the steel pipe columns are provided, and the plurality of the steel pipe columns are arranged at intervals on both sides and in the middle of the thin-walled hollow bridge pier to be cast along the length direction of the bridge, and the bottom is fixed on the cap; a template is supported on one side of the steel pipe column facing the thin-walled hollow bridge pier;

[0007] A distribution beam, wherein a plurality of the distribution beams are provided, and the plurality of distribution beams are arranged on both sides of the thin-walled hollow pier along the length direction of the bridge, and the plurality of distribution beams are distributed at intervals in the long axis direction of the steel pipe column and fixedly connected to the plurality of steel pipe columns;

[0008] A tension member, both ends of which are respectively connected to the ends of two distribution beams located at the same height on both sides of the thin-walled hollow pier along the bridge length direction, and the tension member is located at both ends of the thin-walled hollow pier along the bridge width direction.

[0009] Optionally, when the pressure value of the tension member reaches or exceeds a preset value, the integrated support mechanism also includes a reinforced truss, which is arranged on both sides of the thin-walled hollow pier along the length of the bridge and fixed on a plurality of the steel pipe columns on the same side, and the reinforced truss is located below the corresponding tension member.

[0010] Optionally, the reinforced truss is a frame structure, a plurality of reinforcing ribs are provided inside the frame structure, and the reinforced truss is sleeved on a plurality of the steel pipe columns on the same side and fixedly connected.

[0011] Optionally, a first connecting member is provided between the plurality of steel pipe columns on both sides of the thin-walled hollow pier along the bridge length direction and the formwork, the first connecting member comprising a double-jointed channel steel and a double-jointed I-beam, one end of the double-jointed channel steel is fixedly connected to the double-jointed I-beam, and the other end is fixedly connected to the steel pipe column, and the side of the double-jointed I-beam facing away from the double-jointed channel steel is connected to the formwork.

[0012] Optionally, the two channel steels of the double-jointed channel steel are connected by a second connecting piece, and at least two second connecting pieces are provided and respectively connected to two sides of the double-jointed channel steel.

[0013] Optionally, it also includes a brace member, wherein a plurality of the brace members are provided, and the plurality of the brace members are arranged in the middle of the thin-walled hollow pier and are evenly spaced around each of the steel pipe columns. The first end of the brace member is connected to the steel pipe column located in the middle of the thin-walled hollow pier, and the second end is connected to the two templates in the middle of the thin-walled hollow pier. The height of the second end is higher than that of the first end, and the plurality of the brace members around each of the steel pipe columns are located in the same conical surface.

[0014] Optionally, it also includes a reinforcement member, which is multiple and each of which is arranged between the steel pipe column and the distribution beam. The reinforcement member includes a first plate and a second plate. The first plate is fixedly connected to one side of the second plate and are perpendicular to each other. The first plate is connected to the steel pipe column, and the side of the second plate facing away from the first plate is connected to the distribution beam.

[0015] Optionally, the end of the first plate is an arc surface, the curvature of the arc surface is adapted to the outer circumferential surface of the steel pipe column, and the arc surface is attached to and fixed to the outer circumferential surface of the steel pipe column by welding.

[0016] Optionally, an embedded panel is provided on the surface of the pedestal, and a plurality of anchor bars are provided on the embedded panel. The plurality of anchor bars are distributed in multiple rows and columns, one end of the plurality of anchor bars is fixedly connected to the embedded panel, and the other end faces the interior of the pedestal, and the side of the embedded panel facing away from the anchor bar is fixedly connected to the steel pipe column.

[0017] Optionally, the tension members are precision-rolled threaded steel parts; and the reinforced trusses are frame structures composed of a plurality of double-jointed I-beams.

[0018] Beneficial effects of the present invention:

[0019] The integrated support mechanism of the thin-walled hollow pier of the present invention is provided by arranging a plurality of steel pipe columns on both sides and in the middle of the thin-walled hollow pier along the bridge length direction, facilitating the connection of distribution beams between the plurality of steel pipe columns, and arranging tension members between the distribution beams on both sides. The tension members are located at both ends of the thin-walled hollow pier along the bridge width direction. During the concrete pouring construction process, the tension members will not remain inside the casting body and can be disassembled together with the steel pipe columns after the construction is completed. Therefore, the tension members will not affect the designed service life of the thin-walled hollow pier. Connecting the tension members with distribution beams and connecting the distribution beams to a plurality of steel pipe columns can increase the relative strength between the tension members and reduce or avoid the lateral deformation of the formwork and the steel pipe columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first perspective view of an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0021] Figure 2 is the second perspective view of an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention, and the second perspective is perpendicular to the first perspective in the horizontal direction;

[0022] Figure 3 is is Figure 1 the enlarged schematic view of area A in

[0023] Figure 4 the third perspective view of an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention, and the third perspective is in the top view direction;

[0024] Figure 5 is the structural schematic view of the strengthening truss in an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0025] Figure 6 is the first perspective view of the first connecting member in an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0026] Figure 7 is the second perspective view of the first connecting member in an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention, and the second perspective is perpendicular to the first perspective;

[0027] Figure 8 is the schematic view of the connection position of the strengthening member in an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0028] Figure 9 is the structural schematic view of the strengthening member in an integrated support mechanism of a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0029] Figure 10 It is a schematic diagram of the installation position between the reinforcement and the steel pipe column in an integrated support mechanism for a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0030] Figure 11 It is a schematic diagram of the embedded panel structure in an integrated support mechanism for a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0031] Figure 12 It is a schematic diagram of the positional relationship between the embedded panel and the anchor bars in an integrated support mechanism for a thin-walled hollow pier provided by the specific embodiment of the present invention;

[0032] Figure 13 is Figure 12 The enlarged schematic diagram of area B in, which shows the welding position between the embedded panel and the anchor bars.

[0033] In the figure:

[0034] 100. Thin-walled hollow pier; 200. Raft foundation

[0035] 1. Steel pipe column; 2. Distribution beam; 3. Tie member; 4. Reinforcing truss;

[0036] 41. Reinforcing rib; 5. First connecting member; 51. Double-channel steel; 52. Double I-beam;

[0037] 53. Second connecting member; 6. Bracing member; 7. Reinforcement; 71. First plate member;

[0038] 72. Second plate member; 8. Embedded panel; 9. Anchor bar. Specific embodiment

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0040] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] The present invention provides an integrated support mechanism for a thin-walled hollow pier, as Figures 1-4 shown. The integrated support mechanism includes steel pipe columns 1, distribution beams 2 and tie rods 3. Among them, there are multiple steel pipe columns 1, and the multiple steel pipe columns 1 are arranged at intervals on both sides and in the middle of the thin-walled hollow pier 100 to be cast along the bridge length direction x, and the bottom is fixed on the bearing platform 200; a formwork is arranged on one side of the steel pipe column 1 facing the thin-walled hollow pier 100; there are multiple distribution beams 2, and the multiple distribution beams 2 are arranged on both sides of the thin-walled hollow pier 100 along the bridge length direction x. The multiple distribution beams 2 are distributed at intervals in the long axis direction z of the steel pipe columns 1 and are fixedly connected to the multiple steel pipe columns 1; both ends of the tie rod 3 are respectively connected to the ends of two distribution beams 2 at the same height on both sides of the thin-walled hollow pier 100 along the bridge length direction x, and the tie rod 3 is located at both ends of the thin-walled hollow pier 100 along the bridge width direction y.

[0044] For the integrated support mechanism of the thin-walled hollow pier of the present invention, by arranging multiple steel pipe columns 1 on both sides and in the middle of the thin-walled hollow pier 100 along the bridge length direction x, it is convenient to connect the distribution beams 2 between the multiple steel pipe columns 1, and a tie rod 3 is arranged between the distribution beams 2 on both sides. The tie rod 3 is located at both ends of the thin-walled hollow pier 100 along the bridge width direction y. During the concrete pouring construction process, the tie rod 3 will not remain inside the casting body and can be disassembled together with the steel pipe columns 1 after the construction is completed. Therefore, the tie rod 3 will not affect the designed service life of the thin-walled hollow pier 100. Using the distribution beams 2 to connect the tie rods 3 and the distribution beams 2 are connected to the multiple steel pipe columns 1 can increase the relative strength between the tie rods 3 and reduce or avoid the lateral deformation of the formwork.

[0045] It should be noted that multiple steel pipe columns 1 are arranged in two rows in the x direction on both sides of the thin-walled hollow pier 100. The first row of multiple steel pipe columns 1 close to the thin-walled hollow pier 100 is in the vertical direction. Multiple distribution beams 2 are connected to the side of the first row of multiple steel pipe columns 1 away from the thin-walled hollow pier 100. The distribution beams 2 are horizontally arranged, and both ends of the distribution beams 2 protrude from the first and last steel pipe columns 1 among the first row of multiple steel pipe columns 1, as Figure 4 , when both ends of the distribution beam 2 are connected to the tie rods 3, the tie rods 3 are located outside the thin-walled hollow pier 100 to be cast and do not contact the thin-walled hollow pier 100 to be cast. Therefore, the tie rods 3 will not be cast into the thin-walled hollow pier 100 when pouring concrete, which does not affect the designed service life of the thin-walled hollow pier 100. As Figure 1 , the second row of multiple steel pipe columns 1 away from the thin-walled hollow pier 100 is inclined, and the inclination direction is away from the first row of steel pipe columns 1, which can increase the area of the top of the overall steel pipe columns 1 to bear the top formwork, and improve the stability and strength. As Figure 2 As shown, both ends of the tie member 3 are connected to the ends of two distribution beams 2 located on both sides of the thin-walled hollow pier 100. Specifically, both ends of the tie member 3 respectively penetrate through the two distribution beams 2. On the side of the distribution beam 2 away from the thin-walled hollow pier 100, a double-rolled I-beam is sleeved on the tie member 3 and then fixed. The fixing method can be tightening with nuts or bolting and locking with pins and gaskets. Of course, welding can also be used. The double-rolled I-beam increases the tensile force and strength at both ends of the tie member 3, which is beneficial for the tie member 3 to bear a higher pressure value to resist the lateral pressure deformation of the formwork and form better support for the formwork.

[0046] Optionally, when the pressure value of the tie member 3 reaches or is higher than the preset value P, the integrated support mechanism further includes a strengthening truss 4. The strengthening truss 4 is arranged on both sides of the thin-walled hollow pier 100 along the bridge length direction x and is fixed on multiple steel pipe columns 1 on the same side. The strengthening truss 4 is located below the corresponding tie member 3. The thin-walled hollow pier 100 is mainly applicable to high-bridge construction. As the pouring process progresses, the height of the concrete increases, and the lateral pressure of the formwork also increases accordingly. When the lateral pressure of the formwork reaches or is higher than the preset value P, the tensile force acting on the steel pipe columns 1 increases, which may cause lateral deformation of the steel pipe columns 1. To control the lateral deformation of the steel pipe columns 1, in this embodiment, the steel pipe columns 1 are strengthened by using the strengthening truss 4. In the pier height interval where the pressure value exceeds the value P, a double-strengthening method of using the strengthening truss 4 in cooperation with the tie member 3 is adopted. The strengthening truss 4 is entirely located below the tie member 3 and forms a component with the tie member 3, and is arranged at intervals in the pier height direction z. The preset value P refers to the pressure value of the lateral pressure of the poured concrete acting on the tie rod 3 when the steel pipe column 1 begins to undergo lateral deformation, and this pressure value is usually characterized by the magnitude of the tensile force.

[0047] As shown Figure 5 in FIG. 1, the reinforced truss 4 is a frame structure, and a plurality of reinforcing ribs 41 are arranged inside the frame structure. The reinforced truss 4 is sleeved on a plurality of steel pipe columns 1 on the same side and fixedly connected. Specifically, the reinforced truss 4 can be sleeved from the top of the steel pipe column 1 during installation, or a sleeved structure can be gradually formed during assembly. The plurality of reinforcing ribs 41 are connected end to end inside the reinforced truss 4. The first row of steel pipe columns 1 passes through the gaps formed by the plurality of reinforcing ribs 41 inside the reinforced truss 4, and the steel pipe columns 1 are fixedly connected to the inner side wall of the reinforced truss 4. The second row of steel pipe columns 1 is usually located outside the reinforced truss 4 according to the installation height and is fixedly connected to the outer side wall of the reinforced truss 4. In this way, the relative positions of the plurality of steel pipe columns 1 on the same side can be fixed, preventing the steel pipe columns 1 from deforming under the action of lateral pressure. Preferably, the reinforced truss 4 is a frame structural member composed of a plurality of double-pitched I-beams. In this embodiment, a quadrilateral frame structure is formed by four 32a double-pitched I-beams. The two ends of the plurality of reinforcing ribs 41 inside the frame structure are respectively connected to the inner side walls of the two double-pitched I-beams in the length direction of the frame structure. The adjacent reinforcing ribs 41 are at right angles and are connected end to end in sequence on the inner side walls of the two double-pitched I-beams to form a support. The quadrilateral frame structure is horizontally arranged to resist the lateral pressure of the steel pipe columns 1 in the horizontal direction and increase the strength of the steel pipe columns 1.

[0048] Combined with Figure 6 and Figure 7 , a first connector 5 is provided between the plurality of steel pipe columns 1 on both sides of the thin-walled hollow pier 100 along the bridge length direction x and the formwork. The first connector 5 includes a double-pitched channel steel 51 and a double-pitched I-beam 52. One end of the double-pitched channel steel 51 is fixedly connected to the double-pitched I-beam 52, and the other end is fixedly connected to the steel pipe column 1. The side of the double-pitched I-beam 52 facing away from the double-pitched channel steel 51 is connected to the formwork. As shown Figure 6 and Figure 7 in FIG. 2, the openings of the double-pitched channel steels 51 face each other and are spaced apart at one end of the double-pitched I-beam 52. The double-pitched channel steels 51 are perpendicular to the long axis of the double-pitched I-beam 52. The double-pitched channel steels 51 are connected to the formwork through the double-pitched I-beam 52, which is convenient for fixing with the formwork transverse ribs and can increase the connection strength of the double-pitched channel steels 51.

[0049] Preferably, the two channel steels of the double-pitched channel steel 51 are connected by a second connector 53. At least two second connectors 53 are provided and are respectively connected to both sides of the double-pitched channel steel 51. As shown Figure 6As shown, the second connecting member 53 is generally welded to the side of the double-channel steel 51 to fix the relative positions of the two channels. Especially when the axial direction of the double-channel steel 51 is relatively long, a plurality of second connecting members 53 need to be arranged at intervals in the long axis direction. Specifically, the length of the long axis of the double-channel steel 51 is obtained by on-site actual measurement. The second connecting member 53 generally selects equal-angle steel lacing bars or lacing plates and is welded and fixed perpendicular to the double-channel steel 51. An arc surface is provided on the side of the double-channel steel 51 facing the steel pipe column 1, which is in good contact with the outer circumferential surface of the steel pipe column 1 for welding and fixing.

[0050] As Figure 1 and Figure 4 , the integrated support mechanism of the thin-walled hollow pier of the present invention further includes bracing members 6. There are a plurality of bracing members 6, and the plurality of bracing members 6 are arranged in the middle of the thin-walled hollow pier 100 and are circumferentially and evenly distributed around each steel pipe column 1. The first end of the bracing member 6 is connected to the steel pipe column 1 located in the middle of the thin-walled hollow pier 100, the height of the second end is higher than that of the first end, and the outer side of the second end abuts against two formworks in the middle of the thin-walled hollow pier 100, and the top supports the top formwork. The plurality of bracing members 6 in the circumferential direction of each steel pipe column 1 are located within the same conical surface. As Figure 1 and Figure 4 shown, the bracing member 6 adopts a rod, the bottom is supported on the steel pipe column 1, and the top is used to support the top formwork. The part of the bracing member 6 connected to the steel pipe column 1 has an inclined arc surface, which is adaptively contacted and welded and fixed with the radian of the outer circumferential surface of the steel pipe column 1. The bottom extension lines of the plurality of bracing members 6 in the circumferential direction of the same steel pipe column 1 intersect at the same point on the central axis of the steel pipe column 1.

[0051] As Figures 8-10 , the integrated support mechanism of the thin-walled hollow pier of the present invention further includes stiffening members 7. There are a plurality of stiffening members 7, and each stiffening member 7 is arranged between the steel pipe column 1 and the distribution beam 2. The stiffening member 7 includes a first plate member 71 and a second plate member 72. The first plate member 71 is fixedly connected to one side of the second plate member 72 and the two are perpendicular to each other. The first plate member 71 is connected to the steel pipe column 1, and the side surface of the second plate member 72 facing away from the first plate member 71 is connected to the distribution beam 2.

[0052] Preferably, the end of the first plate member 71 is an arc surface, and the radian of the arc surface is adapted to the outer circular surface of the steel pipe column 1. The arc surface is attached to and welded and fixed with the outer circular surface of the steel pipe column 1.

[0053] As Figure 10As shown in the figure, there are two first plate members 71, which are spaced apart and parallel to each other. One end is fixedly connected to the second plate member, and the other end is connected to the steel pipe column 1. The distribution beam 2 is made of double-channel steel. The distribution beam 2 is connected to the side surface of the second plate member 72 that faces away from the first plate member 71. The surface connection can form better support. The length of the first plate member 71 in the height direction perpendicular to the second plate member 72 is greater than the radius of the steel pipe column 1. The depth of the arc surface at the end of the first plate member 71 is preferably the radius of the steel pipe column 1, so as to better grip the steel pipe column 1 and then weld it for fixation. The reinforcing member 7 increases the contact area between the distribution beam 2 and the steel pipe column 1, which can strengthen the connection strength at the contact position and prevent the steel pipe column 1 from being damaged under the action of load. Designing the two first plate members 71 to be parallel and spaced apart from each other can achieve two-point connection of the steel pipe column 1, preventing the situation of the plate surface tilting due to too small contact area caused by too thin plate thickness, which affects the connection stability.

[0054] As Figures 11-13 , in some embodiments, an embedded panel 8 is provided on the surface of the bearing platform 200 of the integrated support mechanism of the thin-walled hollow pier 100. A plurality of anchor bars 9 are provided on the embedded panel 8. The plurality of anchor bars 9 are distributed in multiple rows and columns. One end of the plurality of anchor bars 9 is fixedly connected to the embedded panel 8, and the other end faces the inside of the bearing platform 200. The bottom of the steel pipe column 1 is fixedly connected to the side of the embedded panel 8 that faces away from the anchor bars 9.

[0055] As Figure 12 shown, one end of the plurality of anchor bars 9 is fixedly connected to one end of the embedded panel 8 and is cast together with the embedded panel 8 inside the bearing platform 200. Among them, one side surface of the embedded panel 8 is flush with the upper surface of the cast bearing platform 200, so as to weld and fix the bottom of the steel pipe column 1 on the embedded panel 8. Between the embedded panel 8 and the anchor bars 9, as Figure 13 shown, the part of the anchor bar 9 inserted into the embedded panel 8 is fixed by the method of plug welding through holes, and the surface of the embedded panel 8 and the anchor bar 9 are fixed by the method of fillet welding, so as to ensure the connection strength between the anchor bar 9 and the embedded panel 8.

[0056] For the integrated support mechanism of the thin-walled hollow pier provided by the present invention, the tension member 3 is a precision rolled threaded steel member. Compared with the tension screw rod commonly used in the prior art, it has a large tensile strength, and threaded steel with different diameters can be selected according to the situation of the lateral pressure. The diameter of the threaded steel rod is 32 mm, which meets the general tension pressure requirements. For piers with a relatively high height, a combination method of using the tension member 3 and the strengthening truss 4 is adopted for reinforcement to prevent the formwork from deforming laterally. In view of the possible change in the distance between different heights of the pier body and the first row of steel pipe columns 1, a first connecting member 5 is provided to connect the steel pipe column 1 and the formwork cross rib of the pier body formwork. In the middle part of the thin-walled hollow pier, a row of steel pipe columns 1 is provided, and a bracing member 6 is arranged between the steel pipe column 1 and the formwork to support the middle formwork and prevent lateral deformation.

[0057] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An integrated support mechanism for a thin-walled hollow pier, characterized in that, it includes: Steel pipe columns (1), there are multiple of the steel pipe columns (1), and the multiple steel pipe columns (1) are arranged at intervals on both sides and in the middle of the thin-walled hollow pier (100) to be poured along the bridge length direction, and the bottom is fixed on the bearing platform (200); on the side of the steel pipe column (1) facing the thin-walled hollow pier (100), there is a formwork supported; Distribution beams (2), there are multiple of the distribution beams (2), and the multiple distribution beams (2) are arranged on both sides of the thin-walled hollow pier (100) along the bridge length direction, and the multiple distribution beams (2) are spaced and distributed in the long axis direction of the steel pipe column (1) and fixedly connected to the multiple steel pipe columns (1); Tie rods (3), both ends of the tie rod (3) are respectively connected to the ends of two distribution beams (2) at the same height on both sides of the thin-walled hollow pier (100) along the bridge length direction, and the tie rod (3) is located at both ends of the thin-walled hollow pier (100) along the bridge width direction; Bracing members (6), there are multiple of the bracing members (6), and the multiple bracing members (6) are arranged in the middle of the thin-walled hollow pier (100) and are circumferentially spaced and evenly distributed around each steel pipe column (1). The first end of the bracing member (6) is connected to the steel pipe column (1) in the middle of the thin-walled hollow pier (100), the height of the second end is higher than that of the first end, the outside of the second end abuts against the two formworks in the middle of the thin-walled hollow pier (100), and the top supports the top formwork. The multiple bracing members (6) in the circumferential direction of each steel pipe column (1) are located within the same conical surface; When the pressure value of the tie rod (3) reaches or is higher than the preset value, the integrated support mechanism further includes a strengthening truss (4). The strengthening truss (4) is arranged on both sides of the thin-walled hollow pier (100) along the bridge length direction and is fixed on the multiple steel pipe columns (1) on the same side. The strengthening truss (4) is located below the corresponding tie rod (3); Between the multiple steel pipe columns (1) on both sides of the thin-walled hollow pier (100) along the bridge length direction and the formwork, there is a first connecting member (5). The first connecting member (5) includes a double-channel steel (51) and a double-I-beam (52). One end of the double-channel steel (51) is fixedly connected to the double-I-beam (52), and the other end is fixedly connected to the steel pipe column (1). The side of the double-I-beam (52) facing away from the double-channel steel (51) is connected to the formwork.

2. The integrated support mechanism for a thin-walled hollow pier according to claim 1, characterized in that, The strengthening truss (4) is a frame structure, and there are multiple reinforcing ribs (41) inside the frame structure. The strengthening truss (4) is sleeved on the multiple steel pipe columns (1) on the same side and fixedly connected.

3. The integrated support mechanism for a thin-walled hollow pier according to claim 1, characterized in that, The two channel steels of the double-channel steel (51) are connected by a second connecting member (53), and at least two second connecting members (53) are provided and are respectively connected to both sides of the double-channel steel (51).

4. The integrated support mechanism for the thin-walled hollow pier according to claim 1, characterized in that, it further includes a reinforcing member (7). A plurality of reinforcing members (7) are provided, and each reinforcing member (7) is arranged between the steel pipe column (1) and the distribution beam (2). The reinforcing member (7) includes a first plate member (71) and a second plate member (72). The first plate member (71) is fixedly connected to one side of the second plate member (72) and is perpendicular to each other. The first plate member (71) is connected to the steel pipe column (1), and the side surface of the second plate member (72) facing away from the first plate member (71) is connected to the distribution beam (2).

5. The integrated support mechanism for the thin-walled hollow pier according to claim 4, characterized in that, the end of the first plate member (71) is an arc surface, and the radian of the arc surface is adapted to the outer circular surface of the steel pipe column (1). The arc surface is attached to and welded and fixed to the outer circular surface of the steel pipe column (1).

6. The integrated support mechanism for the thin-walled hollow pier according to claim 1, characterized in that, a pre-embedded panel (8) is provided on the surface of the bearing platform (200). A plurality of anchor bars (9) are provided on the pre-embedded panel (8). The plurality of anchor bars (9) are distributed in multiple rows and columns. One end of the plurality of anchor bars (9) is fixedly connected to the pre-embedded panel (8), and the other end faces the inside of the bearing platform (200). The side of the pre-embedded panel (8) facing away from the anchor bars (9) is fixedly connected to the steel pipe column (1).

7. The integrated support mechanism for the thin-walled hollow pier according to claim 1, characterized in that, the tension member (3) is a precision rolled threaded steel member; the reinforced truss (4) is a frame structural member composed of a plurality of double-channel steel I-beams.

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