Supporting system for bridge emergency repair and construction method thereof

Abstract

The invention relates to the technical field of bridge maintenance, and provides a supporting system for bridge first-aid repair and a construction method of the supporting system. The supporting system comprises a pile group foundation, a first connecting frame, an assembling pier column and a second connecting frame. The pile group foundation comprises a plurality of spiral single piles which are arranged side by side and configured to be anchored in earthwork. The first connecting frame is detachably connected with the portions, exposed out of the ground, of the multiple spiral single piles. The assembled pier column is configured to be vertically distributed, the lower end of the assembled pier column is detachably connected with the first connecting frame, and the upper end of the assembled pier column is detachably connected with the second connecting frame; the second connecting frame is configured to be connected with a bridge span structure. The supporting system can sequentially transmit loads from top to bottom, has the advantages of being good in stability, high in bearing capacity, low in cost and the like, can stably and reliably support a bridge to be repaired, and facilitates operators to effectively repair and reinforce the bridge in time.

Description

Technical Field

[0001] The invention relates to the technical field of bridge maintenance, and in particular to a support system for emergency bridge repair and a construction method thereof. Background Art

[0002] Bridges are prone to various natural disasters. For example, under the influence of earthquakes and floods, the bridge structure may be damaged or even collapse. In the repair and reinforcement of small and medium-sized bridges, due to the tight construction time and complex environmental site conditions, large lifting machinery and equipment are often not suitable for entering the construction environment of the bridge. Therefore, it is particularly important to quickly set up temporary supports manually.

[0003] However, in actual application, it was found that due to the complex field environment, the existing temporary support system has limited bearing capacity and is difficult to provide reliable support for the bridge, resulting in the inability to repair and reinforce the bridge in a timely and effective manner. Summary of the invention

[0004] The present invention provides a support system for emergency repair of a bridge and a construction method thereof, so as to at least solve or improve the problem in the prior art that the temporary support system has limited bearing capacity and is difficult to reliably support the bridge.

[0005] In a first aspect, the present invention provides a support system for bridge emergency repair, comprising: A pile group foundation comprises a plurality of spiral monopiles, wherein the plurality of spiral monopiles are arranged side by side and configured to be anchored in earth; A first connecting frame is detachably connected to the parts of the plurality of spiral monopiles exposed on the ground; The assembled pier column is configured to be vertically distributed and assembled by steel pipes in different directions; the lower end of the assembled pier column is detachably connected to the first connecting frame, and the upper end of the assembled pier column is detachably connected to the second connecting frame; The second connecting frame is configured to be connected to the bridge span structure.

[0006] According to a support system for bridge emergency repair provided by the present invention, the spiral monopile includes an anchor, a transfer rod and a connector; The anchoring member comprises a rod body and a spiral blade extending along the circumference of the rod body; There are a plurality of transfer rods, and the plurality of transfer rods are connected in sequence from bottom to top, the lower end of the lowest one of the plurality of transfer rods is connected to the anchor, and the upper end of the highest one of the plurality of transfer rods is connected to the connector; The connector and the first connecting frame are detachably connected.

[0007] According to a support system for bridge emergency repair provided by the present invention, the assembled pier column includes a vertical bracket and a retaining frame; The lower end of the vertical bracket is detachably connected to the first connecting frame, and the upper end of the vertical bracket is detachably connected to the second connecting frame; The retaining frame is arranged on the outer side of the vertical support and is detachably connected to the vertical support; the lower end of the retaining frame is supported on the ground.

[0008] According to a support system for bridge emergency repair provided by the present invention, the vertical support comprises a first column and a first crossbar, and the first column and the first crossbar are both steel pipes; There are a plurality of first columns, and the plurality of first columns are arranged in an array, the lower end of the first column is detachably connected to the first connecting frame, and the upper end of the first column is detachably connected to the second connecting frame; There are multiple first cross bars, and the multiple first cross bars are arranged in layers along the extension direction of the first columns; for each of the first cross bars distributed in the same layer, any two adjacent first columns are connected by the first cross bar.

[0009] According to a support system for bridge emergency repair provided by the present invention, the vertical support is a cubic support, and two sets of retaining frames are provided. The two sets of retaining frames are arranged on both sides of the vertical support along the width direction of the vertical support.

[0010] According to a support system for bridge emergency repair provided by the present invention, the retaining frame includes a second column, a second crossbar and a third crossbar, and the second column, the second crossbar and the third crossbar are all steel pipes; There are a plurality of second columns, and the plurality of second columns are arranged side by side, and the lower end of each second column is supported on the ground; There are a plurality of second cross bars, and each of the second cross bars is connected between two adjacent second columns; A plurality of third cross bars are provided, and each of the third cross bars is connected between the first upright column and the second upright column which are adjacently arranged.

[0011] According to a support system for bridge emergency repair provided by the present invention, the assembled pier column further includes an inclined brace, and the inclined brace is a steel pipe; The diagonal braces are arranged obliquely relative to a horizontal plane, are connected to the vertical brackets and the retaining frames respectively, and are distributed on the outer sides of the assembled pier columns.

[0012] According to a support system for bridge emergency repair provided by the present invention, the first connecting frame and the second connecting frame have the same structure, both comprising an I-beam and a channel steel; There are two I-beams, which are spaced apart from each other and arranged side by side; there are a plurality of channel steels, which are arranged side by side and located between the two I-beams.

[0013] In a second aspect, the present invention further provides a construction method of the support system for bridge emergency repair as described above, comprising: Multiple screw piles are driven into the earth in a side-by-side manner to form a pile group foundation; Installing a first connecting frame on the pile group foundation; According to the height of the span structure of the bridge to be repaired from the ground, the piers are assembled on the first connecting frame; A second connecting frame is installed on the top of the assembled pier column.

[0014] According to a construction method of a support system for emergency repair of a bridge provided by the present invention, the step of completing the construction of the assembled pier columns on the first connecting frame includes: A plurality of first upright posts arranged in an array are installed on the first connecting frame, and the plurality of first upright posts are connected by a plurality of first cross bars; Arrange a plurality of second columns on the outside of the plurality of first columns, connect two adjacent second columns with a second cross bar, and connect adjacent first columns and second columns with a third cross bar, so as to complete the construction of the first layer of column units of the assembled pier column; According to the arrangement order from bottom to top, the construction of the second layer of column units to the nth layer of column units is completed in sequence; the number of layers of column units is determined by the height of the single-layer column units and the height of the span structure of the bridge to be repaired from the ground, and n is a natural number greater than or equal to 2.

[0015] The support system for bridge emergency repair and the construction method thereof provided by the present invention facilitate the rapid driving of multiple spiral single piles into the earthwork of the environment where the bridge is located to form a stable pile group foundation when facing the emergency repair and reinforcement of the bridge, and then connect each spiral single pile with the first connecting frame, and then build an assembled pier column based on the first connecting frame, and finally install a second connecting frame on the top of the assembled pier column, and connect the second connecting frame to the span structure of the bridge. This design ensures that the load borne by the support system can be smoothly transmitted from top to bottom to the pile group foundation, and utilizes the multiple spiral single piles corresponding to the pile group foundation to bear the force in an integrated manner, which has the characteristics of good stability, high bearing capacity, low cost, etc., and can implement stable and reliable support for the bridge to be repaired, which is conducive to the operators to carry out emergency repair and reinforcement of the bridge in a timely and effective manner.

[0016] Compared with the existing temporary support system, the support system shown in the present invention is easy to construct, occupies a limited area, does not require large equipment to be brought into the construction site, and has a high bearing capacity, strong environmental adaptability, can be quickly installed, and can be disassembled, recycled and reused. It can solve the problems of insufficient bearing capacity, complex structure, and high construction requirements existing in the temporary support system in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a support system for bridge emergency repair provided by the present invention; Figure 2 It is a structural schematic diagram of the pile group foundation provided by the present invention; Figure 3 It is a planar exploded view of a column unit of the assembled pier provided by the present invention; Figure 4 It is a structural schematic diagram of a connecting piece for assembling pier columns provided by the present invention; Figure 5 is a structural schematic diagram of a first connecting frame provided by the present invention; Figure 6 It is a cross-sectional schematic diagram of the support system provided by the present invention before being used for the repair and reinforcement of small and medium-sized bridges; Figure 7 It is a cross-sectional schematic diagram of an application scenario of the support system provided by the present invention in the emergency repair and reinforcement of small and medium-sized bridges; Figure 8 It is a schematic diagram of the construction method of the support system provided by the present invention; Fig. 9 It is a schematic diagram of the process of completing the construction of the assembled pier column on the first connecting frame provided by the present invention; Reference numerals: 1. Support system; 2. Bridge piers; 3. Bridge span structure; 11. Group pile foundation; 111. Screw pile; 1111. Anchor; 1112. Adapter rod; 1113. Connector; 12. first connecting frame; 121. I-beam; 122. channel steel; 13. Assembled pier column; 131. Vertical bracket; 1311. First column; 1312. First crossbar; 132. Cage; 1321. Second column; 1322. Second crossbar; 1323. Third crossbar; 133. Diagonal brace; 1301. Connector; 14. Second connecting frame. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Combine the following Figure 1-Figure 9 , the support system and construction method for bridge emergency repair provided by the embodiment of the invention are described in detail through specific embodiments and application scenarios.

[0021] In the first aspect, Figure 1 As shown, an embodiment of the present invention provides a support system for bridge emergency repair, the support system 1 comprising: a pile group foundation 11, a first connecting frame 12, an assembled pier column 13 and a second connecting frame 14; The pile group foundation 11 includes a plurality of spiral piles 111, which are arranged side by side and configured to be anchored in the earth; the first connecting frame 12 is detachably connected to the parts of the plurality of spiral piles 111 exposed on the ground; the assembled piers 13 are configured to be vertically distributed and assembled using steel pipes in different directions; the lower end of the assembled pier 13 is detachably connected to the first connecting frame 12, and the upper end of the assembled pier 13 is detachably connected to the second connecting frame 14; the second connecting frame 14 is configured to be connected to the bridge span structure 3.

[0022] It is understandable that the spiral monopile 111 can specifically be a steel pipe spiral pile. The spiral monopile 111 is a special foundation treatment and support structure, which is widely used in civil engineering, construction and infrastructure projects. It has the characteristics of fast construction speed, low installation noise, low vibration, small disturbance to the surrounding soil, and can be installed at different angles in a small confined space and can bear loads immediately after installation.

[0023] The spiral monopile 111 increases the contact area with the soil by designing the spiral blades, thereby providing better bearing capacity and stability. In practical applications, multiple spiral monopile 111 are evenly arranged in a limited earthwork space, the pile body of each spiral monopile 111 goes below the ground, the pile top of the spiral monopile 111 is exposed above the ground, and is detachably connected to the first connecting frame 12.

[0024] The first connecting frame 12 and the second connecting frame 14 are both steel structure brackets. The assembled pier column 13 is arranged in the vertical direction so as to transfer the load in the vertical direction. The assembled pier column 13 includes a plurality of steel pipes. Figure 4 The connector 1301 shown is used for assembly; each steel pipe is a modular steel pipe with a specification of 1-2 meters.

[0025] The projections of the center of gravity of the first connecting frame 12 , the center of gravity of the second connecting frame 14 and the center of gravity of the assembled pier column 13 along the vertical direction coincide with each other, so as to ensure that there will be no eccentricity problem in load transfer.

[0026] In the application of the support system 1 shown in this embodiment in small and medium-sized bridges, when the piers of the bridge are damaged and the bearing capacity is insufficient, Figure 6 The support system 1 is arranged in a manner to provide support for the bridge span structure 3 based on the support system 1. Figure 7 As shown, when multiple damages occur in a small or medium-sized bridge, for example, two adjacent bridge piers 2 of the bridge are damaged, two support systems 1 can be set between the two adjacent bridge piers 2 to provide support for the bridge span structure 3, and the two support systems 1 are respectively set in one-to-one correspondence with the two adjacent bridge piers 2. Of course, more than two support systems 1 can also be shared, and this is not specifically limited.

[0027] For the support system 1 shown in the present invention, when facing the emergency repair and reinforcement of the bridge, it is convenient to quickly drive multiple spiral piles 111 into the earthwork of the bridge environment to form a stable pile group foundation 11, and then connect each spiral pile 111 with the first connecting frame 12, and then build the assembled pier column 13 based on the first connecting frame 12, and finally install the second connecting frame 14 on the top of the assembled pier column 13, and connect the second connecting frame 14 with the bridge span structure 3 of the bridge. This design ensures that the load borne by the support system 1 can be smoothly transmitted from top to bottom to the pile group foundation 11, and the multiple spiral piles 111 corresponding to the pile group foundation 11 are used to bear the force as a whole, which has the characteristics of good stability, high bearing capacity, low cost, etc., and can implement stable and reliable support for the bridge to be repaired, which is conducive to the operators to carry out emergency repair and reinforcement of the bridge in a timely and effective manner.

[0028] Compared with the existing temporary support system, the support system 1 shown in the present invention is easy to construct, occupies a limited area, does not require large equipment to be brought into the construction site, and has a high bearing capacity, strong environmental adaptability, can be quickly installed, and can be disassembled, recycled and reused. It can solve the problems of insufficient bearing capacity, complex structure, high construction requirements, and low timeliness existing in the temporary support system in the prior art.

[0029] In some embodiments, Figure 2As shown, the spiral monopile 111 includes an anchor 1111, a transfer rod 1112 and a connector 1113; the anchor 1111 includes a rod body and a spiral blade extending along the circumference of the rod body; there are multiple transfer rods 1112, and the multiple transfer rods 1112 are connected in sequence from bottom to top, the lower end of the lowest one among the multiple transfer rods 1112 is connected to the anchor 1111, and the upper end of the highest one among the multiple transfer rods 1112 is connected to the connector 1113; the connector 1113 and the first connecting frame 12 are detachably connected.

[0030] It is understandable that each spiral pile 111 is arranged vertically so as to effectively bear the vertical load. When the spiral pile 111 is arranged, the anchor 1111 with the spiral blade is manually driven into the soil, and then a vertically distributed transfer rod 1112 is connected by a casing and pile driving is continued. The transfer and pile driving of the transfer rod 1112 are repeated until the pile driving depth meets the requirements. Finally, the connector 1113 is installed on the upper end of the transfer rod 1112 at the top so as to connect the first connecting frame 12 through the connector 1113.

[0031] In addition, the specification parameters and specific arrangement spacing of the spiral monopile 111 can be adjusted in a wide range and can be determined according to the actual required load size and the natural environment of the on-site construction. Figure 2 As shown, the spiral monopile 111 uses an anchor 1111 with three spiral blades, the diameter of the spiral blades is 356 mm, the burial depth is 8 meters, and the spiral monopile 111 is arranged in a 3×2 array.

[0032] By such arrangement, the spiral pile groups 4 located underground can be manually driven and connected, and the layout pattern can be flexibly adjusted under limited on-site environmental conditions, with little influence from natural environmental conditions.

[0033] In some embodiments, Figure 1 and Figure 3 As shown, the assembled pier column 13 includes a vertical bracket 131 and a retaining frame 132; the lower end of the vertical bracket 131 is detachably connected to the first connecting frame 12, and the upper end of the vertical bracket 131 is detachably connected to the second connecting frame 14; the retaining frame 132 is arranged on the outer side of the vertical bracket 131 and is detachably connected to the vertical bracket 131; the lower end of the retaining frame 132 is supported on the ground.

[0034] It is understandable that the vertical bracket 131 and the retaining frame 132 are both distributed vertically. Since the vertical bracket 131 is arranged between the first connecting frame 12 and the second connecting frame 14, the vertical bracket 131 serves as the core load-bearing part of the assembled pier 13 and is mainly used to transfer vertical loads.

[0035] In actual application, only the retaining frame 132 is connected to the vertical support 131, but not connected to the vertical support 131, the first connecting frame 12 and the second connecting frame 14, and the lower end of the retaining frame 132 is supported on the ground, and the upper end of the retaining frame 132 is not connected to the bridge span structure 3. This design allows the retaining frame 132 to be used to provide auxiliary support for the vertical support 131, thereby ensuring the stability of the vertical support 131.

[0036] Furthermore, if Figure 3 As shown, the vertical support 131 includes a first column 1311 and a first crossbar 1312, and the first column 1311 and the first crossbar 1312 are both steel pipes; There are multiple first columns 1311, and the multiple first columns 1311 are arranged in an array. The lower end of the first column 1311 is detachably connected to the first connecting frame 12, and the upper end of the first column 1311 is detachably connected to the second connecting frame 14; There are multiple first cross bars 1312 , which are arranged in layers along the extension direction of the first columns 1311 ; for the first cross bars 1312 distributed in the same layer, any two adjacent first columns 1311 are connected by the first cross bars 1312 .

[0037] Exemplarily, a plurality of first columns 1311 are arranged in an array along a first direction and a second direction, respectively, and the first direction and the second direction are perpendicular to each other; at the same time, a portion of the plurality of first crossbars 1312 is extended along the first direction, and this portion of the first crossbars 1312 is connected between two adjacent first columns 1311 arranged along the first direction by using a connector 1301, and another portion of the plurality of first crossbars 1312 is extended along the second direction, and this portion of the first crossbars 1312 is connected between two adjacent first columns 1311 arranged along the second direction by using a connector 1301. Thus, based on this connection design, the vertical bracket 131 is constructed as a cubic bracket.

[0038] Furthermore, if Figure 3 As shown, when the vertical bracket 131 is a cubic bracket, two sets of retaining frames 132 are provided, and the two sets of retaining frames 132 are arranged on both sides of the vertical bracket 131 along the width direction of the vertical bracket 131 to provide better stability for the vertical bracket 131 based on the two sets of retaining frames 132.

[0039] Furthermore, if Figure 3 As shown, the retaining frame 132 includes a second column 1321, a second cross bar 1322 and a third cross bar 1323, and the second column 1321, the second cross bar 1322 and the third cross bar 1323 are all steel pipes; There are multiple second columns 1321, which are arranged side by side, and the lower end of each second column 1321 is supported on the ground; there are multiple second cross bars 1322, and each second cross bar 1322 is connected between two adjacent second columns 1321; there are multiple third cross bars 1323, and each third cross bar 1323 is connected between the adjacent first columns 1311 and the second columns 1321.

[0040] In the case where two sets of retaining frames 132 are provided, the two sets of retaining frames 132 are arranged opposite to each other along the width direction of the vertical bracket 131 .

[0041] For the vertical support 131, the first column 1311 and the first crossbar 1312 can both be made of modular steel pipes with a length of 1-2 meters; for the retaining frame 132, the second column 1321, the second crossbar 1322 and the third crossbar 1323 can be made of modular steel pipes with a length of 1-2 meters. Of course, the vertical support 131 and the retaining frame 132 can also use larger modular steel pipes (length greater than 2 meters) to adapt to different application requirements.

[0042] In some embodiments, Figure 3 As shown, in order to enhance the structural strength of the assembled pier column 13, the assembled pier column 13 also includes a diagonal brace 133, which is a steel pipe; the diagonal brace 133 is inclined relative to the horizontal plane, and the diagonal brace 133 is respectively connected to the vertical bracket 131 and the retaining frame 132, and is distributed on the outside of the assembled pier column 13.

[0043] Specifically, there are multiple diagonal braces 133, a first portion of the multiple diagonal braces 133 is arranged on the left side of the vertical bracket 131, and a second portion of the multiple diagonal braces 133 is arranged on the right side of the vertical bracket 131. The left side and the right side of the vertical bracket 131 are arranged opposite to each other along the length direction of the vertical bracket 131.

[0044] Since there are two sets of retaining frames 132, and the two sets of retaining frames 132 are arranged on the front and rear sides of the vertical bracket 131 along the width direction of the vertical bracket 131, for the retaining frame 132 located on the front side of the vertical bracket 131, the third part of the multiple diagonal braces 133 is arranged on the front side of the retaining frame 132; for the retaining frame 132 located on the rear side of the vertical bracket 131, the fourth part of the multiple diagonal braces 133 is arranged on the rear side of the retaining frame 132.

[0045] In some embodiments, Figure 5 As shown, the first connecting frame 12 and the second connecting frame 14 have the same structure, both including an I-beam 121 and a channel steel 122; the first connecting frame 12 is taken as an example for specific description.

[0046] Specifically, two I-beams 121 are provided, the two I-beams 121 are spaced apart from each other and arranged side by side; a plurality of channel steels 122 are provided, the plurality of channel steels 122 are arranged side by side and are located between the two I-beams 121 .

[0047] Exemplarily, four channel steels 122 are provided, and the four channel steels 122 are arranged in sequence along the extension direction of the I-beam 121 . The extension direction of each channel steel 122 is perpendicular to the extension direction of each I-beam 121 , and the I-beam 121 and the channel steel 122 are fastened with bolts.

[0048] like Figure 1 As shown, the first connecting frame 12 and the second connecting frame 14 have the same structure, and the projections of the first connecting frame 12 and the second connecting frame 14 along the vertical direction overlap. Figure 1 and Figure 3 As shown, when the assembled pier column 13 includes a vertical bracket 131 and a retaining frame 132, each first column 1311 corresponding to the vertical bracket 131 is connected to the I-beam 121 on the first connecting frame 12 or the second connecting frame 14. Figure 1 and Figure 2 As shown, the I-beam 121 on the first connecting frame 12 is connected to the connector 1113 located at the top end of the spiral monopile 111 .

[0049] In the second aspect, Figure 8 As shown, an embodiment of the present invention further provides a construction method of the support system for bridge emergency repair as described above, comprising the following steps: Step 810, driving a plurality of spiral piles into the earthwork in a side-by-side manner to form a pile group foundation; Step 820, installing a first connecting frame on the pile group foundation; Step 830, according to the height of the span structure of the bridge to be repaired from the ground, complete the construction of the assembled piers on the first connecting frame; Step 840, installing a second connecting frame on the top of the assembled pier column.

[0050] Specifically, in actual construction, a pile group foundation is first arranged in the environment where the bridge to be repaired is located. The operation is as follows: an anchor with a spiral blade is manually driven into the soil, and then a casing is used to connect a vertically distributed transfer rod and then continue piling. The transfer and piling work of the transfer rod is repeated until the piling depth meets the requirements. Finally, a connector is installed at the upper end of the transfer rod at the top to complete the piling operation of a spiral single pile. Then, multiple spiral single piles are arranged in this way in turn to form a pile group foundation in the earthwork.

[0051] Then, the I-beams are manually moved onto the spiral monopile, the connectors on the top of each spiral monopile are connected to the I-beams respectively, and the I-beams and channel steels are assembled to complete the installation of the first connecting frame on the pile group foundation.

[0052] Then, follow the Fig. 9 The steps shown are to complete the operation of erecting the assembled pier column on the first connecting frame: step 910, installing a plurality of first columns arranged in an array on the first connecting frame, and connecting the plurality of first columns with a plurality of first cross bars; step 920, arranging a plurality of second columns on the outside of the plurality of first columns, connecting two adjacent second columns with a second cross bar, and connecting adjacent first columns and second columns with a third cross bar, so as to complete the erection of the first layer of column units of the assembled pier column; step 930, completing the erection of the second layer to the nth layer of column units in sequence according to the arrangement order from bottom to top; the number of layers of column units to be erected is determined by the height of the single-layer column units and the height of the span structure of the bridge to be repaired from the ground, and n is a natural number greater than or equal to 2.

[0053] Next, the I-beam is moved to the top of the assembled pier column, connected to the top of the assembled pier column, and the I-beam and the channel steel are assembled to complete the installation of the second connecting frame on the pile group foundation, so as to connect the span structure of the bridge based on the second connecting frame.

[0054] To sum up, the support system for emergency repair of bridges using manual operations provided by the present invention not only has a clear structure, occupies a small area, and does not require large-scale equipment to be brought in for construction, but also has a high bearing capacity, strong environmental adaptability, can be quickly installed, and can be disassembled, recycled and reused. It can solve the problems of insufficient bearing capacity, complex structure, high construction requirements, and low timeliness of temporary support systems in the prior art.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A support system for bridge repair, characterized in that: include: A pile group foundation comprises a plurality of spiral monopiles, wherein the plurality of spiral monopiles are arranged side by side and configured to be anchored in earth; A first connecting frame is detachably connected to the parts of the plurality of spiral monopiles exposed on the ground; The assembled pier column is configured to be vertically distributed and assembled by steel pipes in different directions; the lower end of the assembled pier column is detachably connected to the first connecting frame, and the upper end of the assembled pier column is detachably connected to the second connecting frame; The second connecting frame is configured to be connected to the bridge span structure.

2. The support system for bridge repair according to claim 1 is characterized in that: The spiral monopile comprises an anchor, a transfer rod and a connector; The anchoring member comprises a rod body and a spiral blade extending along the circumference of the rod body; There are a plurality of transfer rods, and the plurality of transfer rods are connected in sequence from bottom to top, the lower end of the lowest one of the plurality of transfer rods is connected to the anchor, and the upper end of the highest one of the plurality of transfer rods is connected to the connector; The connector and the first connecting frame are detachably connected.

3. The support system for bridge repair according to claim 1 is characterized in that: The assembled pier column includes a vertical bracket and a retaining frame; The lower end of the vertical bracket is detachably connected to the first connecting frame, and the upper end of the vertical bracket is detachably connected to the second connecting frame; The retaining frame is arranged on the outer side of the vertical support and is detachably connected to the vertical support; the lower end of the retaining frame is supported on the ground.

4. The support system for bridge repair according to claim 3 is characterized in that: The vertical support comprises a first column and a first crossbar, and both the first column and the first crossbar are steel pipes; There are a plurality of first columns, and the plurality of first columns are arranged in an array, the lower end of the first column is detachably connected to the first connecting frame, and the upper end of the first column is detachably connected to the second connecting frame; There are multiple first cross bars, and the multiple first cross bars are arranged in layers along the extension direction of the first columns; for each of the first cross bars distributed in the same layer, any two adjacent first columns are connected by the first cross bar.

5. The support system for bridge repair according to claim 3 is characterized in that: The vertical bracket is a cubic bracket, and two sets of the retaining frames are provided. The two sets of the retaining frames are arranged on both sides of the vertical bracket along the width direction of the vertical bracket.

6. The support system for bridge repair according to claim 4, characterized in that: The retaining frame comprises a second column, a second crossbar and a third crossbar, wherein the second column, the second crossbar and the third crossbar are all steel pipes; There are a plurality of second columns, and the plurality of second columns are arranged side by side, and the lower end of each second column is supported on the ground; There are a plurality of second cross bars, and each of the second cross bars is connected between two adjacent second columns; A plurality of third cross bars are provided, and each of the third cross bars is connected between the first upright column and the second upright column which are adjacently arranged.

7. The support system for bridge repair according to claim 3 is characterized in that: The assembled pier column also includes a diagonal brace, which is a steel pipe; The diagonal braces are arranged obliquely relative to a horizontal plane, are connected to the vertical brackets and the retaining frames respectively, and are distributed on the outer sides of the assembled pier columns.

8. The support system for emergency bridge repair according to any one of claims 1 to 7, characterized in that: The first connecting frame and the second connecting frame have the same structure, both comprising an I-beam and a channel steel; There are two I-beams, which are spaced apart from each other and arranged side by side; there are a plurality of channel steels, which are arranged side by side and located between the two I-beams.

9. A construction method for a support system for emergency bridge repair according to any one of claims 1 to 8, characterized in that: include: Multiple screw piles are driven into the earth in a side-by-side manner to form a pile group foundation; Installing a first connecting frame on the pile group foundation; According to the height of the span structure of the bridge to be repaired from the ground, the piers are assembled on the first connecting frame; A second connecting frame is installed on the top of the assembled pier column.

10. The construction method according to claim 9, characterized in that: The step of completing the construction of the assembled pier columns on the first connecting frame includes: A plurality of first upright posts arranged in an array are installed on the first connecting frame, and the plurality of first upright posts are connected by a plurality of first cross bars; Arrange a plurality of second columns on the outside of the plurality of first columns, connect two adjacent second columns with a second cross bar, and connect adjacent first columns and second columns with a third cross bar, so as to complete the construction of the first layer of column units of the assembled pier column; According to the arrangement order from bottom to top, the construction of the second layer of column units to the nth layer of column units is completed in sequence; the number of layers of column units is determined by the height of the single-layer column units and the height of the span structure of the bridge to be repaired from the ground, and n is a natural number greater than or equal to 2.

Images