Integral bridge abutment and construction method

Abstract

The present invention relates to an integral abutment and a construction method. An integral abutment comprises: a pile foundation; a first connecting column, the first connecting column is fixed to the pile foundation; a second connecting column; and a connecting assembly, the first connecting column and the second connecting column are connected by the connecting assembly, the connecting assembly comprises an arched portion, the arched portion is provided with an arcuate surface, so that the second connecting column can swing along the arcuate surface relative to the first connecting column. An integral abutment construction method comprises: fixing the first connecting column to the pile foundation; fixing the main beam to the second connecting column, connecting the second connecting column to the first connecting column through the connecting assembly, and the ends of the first connecting column and the second connecting column are spaced apart, the connecting assembly comprises an arched portion, the arched portion is provided with an arcuate surface, and the second connecting column can swing along the arcuate surface relative to the first connecting column; closing and consolidating the end interval of the first connecting column and the second connecting column to form a whole. The above-mentioned integral abutment and construction method have strong resistance to horizontal deformation and vertical bearing capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular to an integral bridge abutment and a construction method. Background Art

[0002] Bridges will expand and contract when the temperature changes. In order to eliminate the influence of deformation on the structure, a connection assembly is usually set between the first connection column and the second connection column to reduce the bending moment caused by the component erection process. Most of the current connection assemblies have complex structures, are inconvenient to install, and have complex forces, and cannot be applied to steel tube concrete column structures. Summary of the invention

[0003] Based on this, it is necessary to provide an integral abutment and construction method to address the problems of complex structure and inconvenient installation of connection components.

[0004] An integral abutment, comprising:

[0005] Pile foundation;

[0006] a first connecting column, the first connecting column being fixed to the pile foundation;

[0007] a second connecting post; and

[0008] A connecting component, wherein the first connecting column and the second connecting column are connected by the connecting component, and the ends of the first connecting column and the second connecting column are spaced apart, and the connecting component comprises an arched portion, and the arched portion is provided with an arcuate surface so that the second connecting column can swing along the arcuate surface relative to the first connecting column.

[0009] In the above-mentioned integral abutment, the second ends of the first connecting column and the second connecting column are connected by a connecting assembly, and the second connecting column swings along an arc surface relative to the first connecting column. The connecting assembly has a simple structure and is easy to install, which enhances the rotation ability of the connection between the first connecting column and the second connecting column and can better absorb the horizontal deformation of the bridge.

[0010] In one embodiment, the connecting component includes an arched portion and a connecting portion, the connecting portion is protruding from the arched portion, the arched portion is connected to the first connecting column, and the connecting portion is connected to the second connecting column.

[0011] In one embodiment, the arched portion is semi-cylindrical and has a rectangular bottom cross-section.

[0012] In one embodiment, the arched portion is hemispherical and has a circular bottom cross-section.

[0013] In one embodiment, the first connecting column includes a first column body and a first filling layer, the first column body is hollow, the first filling layer is filled in the first column body, and the height of the first filling layer is smaller than the height of the first column body, so that the first column body retains a cavity to accommodate the arched portion.

[0014] In one embodiment, the second connecting column includes a second column body and a second filling layer, the second column body is hollow, the second filling layer is filled in the second column body, and the second filling layer is provided with a slot to accommodate the connecting portion.

[0015] In one embodiment, a filling surface of the second filling layer after being filled in the second column is flat.

[0016] In one embodiment, the filling surface of the second filling layer after being filled in the second column is an upward convex arc surface, and the curve radius of the filling surface is greater than the curve radius of the arc surface.

[0017] In one embodiment, the first column and / or the second column is a steel pipe, and the first filling layer and / or the second filling layer is concrete.

[0018] An integral abutment construction method comprises:

[0019] Fixing the first connecting column to the pile foundation;

[0020] The main beam is fixed to the second connecting column, and the second connecting column is connected to the first connecting column through a connecting assembly, and the ends of the first connecting column and the second connecting column are spaced apart, and the connecting assembly includes an arched portion, and the arched portion is provided with an arc surface, and the second connecting column can swing along the arc surface relative to the first connecting column, so as to eliminate the bending moment caused by the self-weight of the main beam pressing on the second connecting column;

[0021] The transition piece is welded to the interval, and grouting holes and grouting holes are opened on the first connecting column and / or the second connecting column. Grouting material or cement mortar is filled into the cavity surrounding the connecting component through the grouting holes and the grouting holes. After the grouting material or cement mortar is sealed and solidified, the first connecting column and the second connecting column are connected as a whole from bottom to top to form an integral abutment.

[0022] In the above-mentioned integral abutment construction method, the second ends of the first connecting column and the second connecting column are connected by a connecting assembly. The connecting assembly has a simple structure and is easy to install. The second connecting column can swing along an arc surface relative to the first connecting column, thereby enhancing the rotation ability of the connection between the first connecting column and the second connecting column, eliminating the bending moment caused by the deadweight of the main beam during construction, and better absorbing the horizontal deformation of the bridge. After closed consolidation, the first connecting column and the second connecting column are connected as one, thereby improving the vertical bearing capacity of the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a side view of a bridge without expansion joints in one embodiment (wherein the first connecting column and the second connecting column are not connected);

[0024] Figure 2 for Figure 1 An exploded schematic diagram of a second connecting column of a bridge without expansion joints is shown;

[0025] Figure 3 for Figure 1 A schematic diagram of the connection between the second connecting column and the main beam of a bridge without expansion joints is shown;

[0026] Figure 4 It is a partial front view of a bridge without expansion joints in one embodiment (wherein the first connecting column and the second connecting column are not connected);

[0027] Figure 5 for Figure 4 AA surface section view;

[0028] Figure 6 A side view of a bridge without expansion joints in one embodiment (wherein the first connecting column and the second connecting column are connected);

[0029] Figure 7 It is a partial front view of a bridge without expansion joints in one embodiment (wherein the first connecting column and the second connecting column are connected);

[0030] Figure 8 for Figure 7 BB surface cross-sectional view;

[0031] Fig. 9 It is a partial front view of an integral abutment in another embodiment (wherein the first connecting column and the second connecting column are connected);

[0032] Fig.10 for Fig. 9 CC section view;

[0033] Fig.11 It is a partial front view of an integral abutment in another embodiment (wherein the first connecting column and the second connecting column are connected);

[0034] Fig.12 for Fig.11 DD section view;

[0035] Fig.13 It is a partial front view of an integral abutment in another embodiment (wherein the first connecting column and the second connecting column are connected);

[0036] Fig.14 for Fig.13 EE cross-sectional view. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] Please refer to Figure 1 and Figure 6 A bridge without expansion joints in one embodiment includes a bridge deck 100, an integral abutment 200, a main beam 300 and an end beam 400.

[0041] Please refer to Figure 1 The integral abutment 200 includes a pile foundation 210, a first connecting column 220, a second connecting column 230 and a connecting assembly 240. The first end 221 of the first connecting column 220 is fixed to the pile foundation 210, the first end 231 of the second connecting column 230 is used to connect and support the bridge deck 100, and the second end 222 of the first connecting column 220 and the second end 232 of the second connecting column 230 are connected by the connecting assembly 240. Please refer to Figure 4The connecting component 240 is provided with an arc surface 240 a, and the arc surface 240 a is convex toward the second connecting column 230, so that the second connecting column 230 can swing along the arc surface 240 a relative to the first connecting column 220.

[0042] Specifically, please refer to Figure 1 The pile foundation 210 includes a pile body 211 and a pile column 212 . The pile column 212 is inserted into the pile body 211 and partially exposed. The partially exposed pile column 212 is connected to the first end 221 of the first connecting column 220 .

[0043] In some embodiments, the pile column 212 is connected to the first end 221 of the first connecting column 220 by welding. In other embodiments, the pile column 212 is connected to the first end 221 of the first connecting column 220 by riveting.

[0044] In some embodiments, the pile body 211 is concrete, and the pile column 212 is a hollow steel pipe. Since the connection between the pile foundation 210 and the first connecting column 220 is subjected to large stress and is easily damaged, if the first connecting column 220 is directly inserted into the pile foundation 210, it is difficult to repair the first connecting column 220 after damage, thereby affecting the use of the bridge. The pile column 212 preset on the pile body 211 can reduce the bending moment borne by the first connecting column 220, extend the service life of the first connecting column 220, and through the cooperation of concrete and hollow steel pipes, the horizontal and longitudinal deformation of the bridge can be better absorbed, while improving the vertical bearing capacity of the pile foundation 210. In other embodiments, the pile body 211 is concrete, the pile column 212 is a concrete column, and the pile column 212 is connected to the pile body 211 as a whole.

[0045] In some embodiments, the pile column 212 is a single-layer hollow steel pipe. In other embodiments, the pile column 212 can also be a double-layer single-layer hollow steel pipe, that is, two layers of steel pipes are coaxially sleeved, and concrete is poured in the cavity between the two layers of steel pipes to improve the vertical bearing capacity and horizontal deformation resistance of the pile foundation 210.

[0046] In some embodiments, the pile body 211, the pile column 212 and the first connecting column 220 are all cylindrical and coaxially arranged, which is conducive to the balanced force of the pile foundation 210 and improves the structural stability. In other embodiments, the pile body 211, the pile column 212 and the first connecting column 220 can also be square column, prism or other irregular shapes.

[0047] Please refer to Figure 4 The connecting component 240 includes an arched portion 241 and a connecting portion 242 . The arc surface 240 a is disposed on the arched portion 241 . The connecting portion 242 is protruding from the arched portion 241 . The arched portion 241 is connected to the first connecting column 220 , and the connecting portion 242 is connected to the second connecting column 230 .

[0048] Specifically, please refer to Figure 1 The first connecting column 220 includes a first column 223 and a first filling layer 224. The first column 223 is hollow. The first filling layer 224 is filled in the first column 223, and the height of the first filling layer 224 is smaller than the first column 223, so that the upper end of the first column 223 can retain a cavity (not shown in the figure) to accommodate the arch portion 241.

[0049] In some embodiments, the first column 223 is a hollow steel pipe, and the first filling layer 224 is concrete. In other embodiments, the first column 223 may also be a concrete column.

[0050] In some embodiments, the total height of the arched portion 241 and the connecting portion 242 is 50-300 mm, and the height difference between the first filling layer 224 and the first column 223 is 50-200 mm, so that the arched portion 241 can be well located in the first column 223 and the connecting portion 242 is partially exposed outside the first column 223, and the connecting portion 242 partially exposed outside the first column 223 is connected to the second connecting column 230. In other embodiments, the total height of the arched portion 241 and the connecting portion 242 can also be less than 50 mm or greater than 300 mm, and the height difference between the first filling layer 224 and the first column 223 can also be less than 50 mm or greater than 200 mm.

[0051] In some embodiments, the arc surface 240a is provided on the arch portion 241, the arc surface 240a is convex toward the second connecting column 230, the arch portion 241 is connected to the first connecting column 220, and the connecting portion 242 is connected to the second connecting column 230. In other embodiments, the arc surface 240a is convex toward the second connecting column 230, the connecting portion 242 is connected to the first connecting column 220, and the arch portion 241 is connected to the second connecting column 230.

[0052] Please refer to Figure 1 The second connecting column 230 includes a second column 233 and a second filling layer 234 . The second column 233 is hollow. The second filling layer 234 is filled in the second column 233 . A slot 235 is provided in the middle of the second filling layer 234 to accommodate the connecting portion 242 .

[0053] In some embodiments, the second column 233 is a hollow steel pipe, and the second filling layer 234 is concrete. In other embodiments, the second column 233 may also be a concrete column.

[0054] In some embodiments, please refer to Figure 5, the connecting portion 242 is in the shape of a rectangular column, and the slot 235 is in a rectangular shape to match the connecting portion 242, so as to better position the second connecting column 230. If the connecting portion 242 is in the shape of a cylinder, the second connecting column 230 is very easy to rotate relative to the first connecting column 220 with the connecting portion 242 as the axis, increasing the torque of the first connecting column 220, thereby affecting the stability of the structure of the integral abutment 200. In other embodiments, the connecting portion 242 can also be in the shape of a prism or other irregular shapes, and the slot 235 can be in the shape of a prism or other irregular shapes.

[0055] In some embodiments, the arched portion 241 and the connecting portion 242 are split structures, the arched portion 241 is provided with a receiving space, and the connecting portion 242 is directly inserted into the receiving space, which is convenient for assembly. In other embodiments, the arched portion 241 and the connecting portion 242 can also be an integrated structure with good integrity and high strength.

[0056] In some embodiments, the number of the connecting portion 242 is one and is located at the center of the arched portion 241 to balance the force of the connecting device. In other embodiments, the number of the connecting portion 242 can also be at least two and are spaced and arranged side by side on the arched portion 241.

[0057] In some embodiments, the number of the integral abutments 200 is multiple and they are arranged side by side at intervals to stabilize the bridge structure. In other embodiments, the multiple integral abutments 200 can also be arranged in a circular array or other irregular arrangements.

[0058] Please refer to Figure 1 and Figure 4 , it is necessary to first connect the main beam 300 to the second connecting column 230, and then connect the second connecting column 230 to the first connecting column 220 through the connecting assembly 240, and then cast the bridge deck 100. Since the main beam 300 is located on one side of the second connecting column 230 and has weight, it will press the second connecting column 230, so that the second connecting column 230 can swing left and right along the arc surface 240a relative to the first connecting column 220, which is used to eliminate the bending moment caused by the self-weight of the main beam 300 during construction, increase the bending resistance of the connection between the first connecting column 220 and the second connecting column 230, and extend the service life of the structure.

[0059] In some embodiments, please refer to Figure 4 and Figure 5 The filling surface 234a of the second filling layer 234 after being filled in the second column 233 is flat, and the arch portion 241 is semi-cylindrical and has a rectangular bottom cross-section, so that the second connecting column 230 swings relative to the first connecting column 220 along the curved surface 240a of the arch portion 241.

[0060] In other embodiments, please refer to Fig. 9 and Fig.10After the second filling layer 234 is filled in the second column 233, the filling surface 234a is an upward convex arc surface, and the curve radius of the filling surface 234a is greater than the curve radius of the arc surface 240a of the arch portion 241 to avoid the arch portion 241 interfering with the swing of the second connecting column 230. The arch portion 241 is semi-cylindrical and the bottom cross-section is rectangular.

[0061] In some other embodiments, please refer to Fig.11 and Fig.12 After the second filling layer 234 is filled in the second column 233 , the filling surface 234 a is flat, and the arched portion 241 is hemispherical and has a circular bottom cross section.

[0062] For other embodiments, please refer to Fig.13 and Fig.14 After the second filling layer 234 is filled in the second column 233, the filling surface 234a is an upward convex arc surface, and the curve radius of the filling surface 234a is greater than the curve radius of the arc surface 240a of the arch portion 241 to avoid the arch portion 241 interfering with the swing of the second connecting column 230. The arch portion 241 is hemispherical and the bottom cross-section is circular.

[0063] For further information, please refer to Figure 1 In order to facilitate the swinging of the second connecting column 230 relative to the first connecting column 220, the second end 222 of the first connecting column 220 and the second end 232 of the second connecting column 230 are arranged at a relative interval to eliminate the bending moment caused by the deadweight of the main beam 300 during construction. The above-mentioned integral abutment 200 also includes a transition piece 201, which is arranged at the interval between the second end 222 of the first connecting column 220 and the second end 232 of the second connecting column 230.

[0064] Preferably, in some embodiments, the spacing between the second end 222 of the first connecting post 220 and the second end 232 of the second connecting post 230 is 100-300 mm. In other embodiments, the spacing between the second end 222 of the first connecting post 220 and the second end 232 of the second connecting post 230 may be less than 100 mm or greater than 300 mm.

[0065] In some embodiments, the first connecting column 220 and the second connecting column 230 are both hollow cylindrical and coaxially arranged. In other embodiments, the first connecting column 220 and the second connecting column 230 can also be hollow square column or other irregular shapes.

[0066] In some embodiments, the transition piece 201 is an integral strip-shaped structure and is disposed around the interval between the first connecting column 220 and the second connecting column 230. The transition piece 201 is connected to the first connecting column 220 and the second connecting column 230 by welding, and the material of the transition piece 201 is steel. In other embodiments, the transition piece 201 can also be a spliced ​​structure.

[0067] Please refer to Figure 1 , the main beam 300 is connected to the second connection column 230 and the bridge deck 100. Specifically, the second connection column 230 is provided with a matching opening, and at least part of the structure of the main beam 300 passes through the matching opening and is connected to the second connection column 230 as a whole, so that the main beam 300 is fixedly connected to the second connection column 230, avoiding the unstable connection between the main beam 300 and the second connection column 230 and slipping, thereby making the structure unstable.

[0068] In some embodiments, the main beam 300 is connected to the second connection column 230 by welding. In other embodiments, the main beam 300 can also be connected to the second connection column 230 by riveting.

[0069] In some embodiments, please refer to Figure 2 The second connecting column 230 has a matching opening to form a first segment 236, a second segment 237 and a third segment 238, please refer to Figure 3 The main beam 300 includes a first wing plate 310, a web plate 320 and a second wing plate 330. The first wing plate 310 and the second wing plate 330 are arranged opposite to each other and are connected to the web plate 320 vertically or nearly vertically so that the main beam 300 is in an I-shape. The first segment 236 and the second segment 237 are respectively arranged on opposite sides of the web plate 320, and the first segment 236 and the second segment 237 are sandwiched between the first wing plate 310 and the second wing plate 330. The third segment 238 is connected to the bottom of the second wing plate 330. In other embodiments, the main beam 300 can also be in a W-shape, an L-shape, a W-shape or other irregular shapes. The number of segments included in the second connecting column 230 can be greater than three and in different splicing methods, as long as part of the structure of the main beam 300 can be embedded in the second connecting column 230 to ensure the stability of the structural connection.

[0070] In some embodiments, the first segment 236 and the second segment 237 are in the shape of semicircular arc sheets, the third segment 238 is in the shape of a hollow cylinder, and the cavity formed by the first segment 236 and the second segment 237 is coaxially arranged with the inner cavity of the third segment. In other embodiments, the first segment 236 and the second segment 237 may be in the shape of a U-shaped sheet, the third segment 238 is in the shape of a hollow square column, and the cavity formed by the first segment 236 and the second segment 237 is coaxially arranged with the inner cavity of the third segment.

[0071] Furthermore, the above-mentioned expansion joint-free bridge also includes an intermediate beam (not shown in the figure). In some embodiments, since the number of main beams 300 is at least two and multiple main beams 300 are arranged side by side at intervals, the main beams 300 extend in the transverse direction, and the intermediate beam is vertically arranged between two adjacent main beams 300 and extends in the longitudinal direction to connect multiple main beams 300 to ensure structural stability.

[0072] Please refer to Figure 6 and Figure 7 The end beam 400 is connected to the first connecting column 220 , the second connecting column 230 and the bridge deck 100 , and is arranged side by side with the middle beam to reinforce the connection of multiple integral abutments 200 .

[0073] Specifically, the end beam 400 includes a bracket and a bracket filling layer (not shown in the figure), please refer to Figure 7 A plurality of shear nails 225 are convexly arranged on the outer periphery of the first connecting column 220 and the second connecting column 230, and a support filling layer is cast on the support to consolidate the support filling layer with the shear nails 225 and the support, so that the end beam 400 is fixedly connected with the first connecting column 220, the second connecting column 230 and the bridge deck 100. The support is a steel bar, and the support filling layer is concrete.

[0074] Further, when the bracket intersects with the web 320 of the main beam 300, please refer to Figure 3 A circular hole 301 is provided in the web 320 of the main beam 300. In some embodiments, the diameter of the circular hole 301 is greater than or equal to 2.5 times the diameter of the steel bar, so that the steel bar can be smoothly passed through the circular hole 301. In other embodiments, the diameter of the circular hole 301 can be less than 2.5 times the diameter of the steel bar, as long as the steel bar can pass through the circular hole 301.

[0075] Please refer to Figure 7 The above-mentioned bridge without expansion joints further includes a slab 500, a step surface 110 is formed at the connection between the end beam 400 and the bridge deck 100, and the slab 500 is connected to the step surface 110 and is connected to the bridge deck 100 as a whole, so as to prevent the end of the above-mentioned bridge without expansion joints from settling. Specifically, the slab 500 is a reinforced concrete structure.

[0076] The above-mentioned expansion joint-free bridge is provided with an integral abutment 200, which includes a pile foundation 210, a first connecting column 220, a second connecting column 230 and a connecting assembly 240. The second ends of the first connecting column 220 and the second connecting column 230 are connected by the connecting assembly 240, and the second connecting column 230 can swing along the arc surface 240a relative to the first connecting column 220, which can better absorb the horizontal deformation of the bridge and improve the vertical bearing capacity of the pile foundation 210; part of the structure of the main beam 300 is embedded in the second connecting column 230 and connected to the second connecting column 230 as a whole, which can improve the stability of the structural connection; the middle beam is vertically arranged between two adjacent main beams 300 to connect multiple main beams 300 to ensure structural stability; the end beam 400 and the bridging plate 500 are arranged to prevent the end of the bridge from settling.

[0077] A construction method for a bridge without expansion joints in one embodiment includes:

[0078] Fixing the first connecting column 220 to the pile foundation 210;

[0079] Specifically, please refer to Figure 1 The pile foundation 210 includes a pile body 211 and a pile column 212. The pile column 212 is inserted into the pile body 211 and fixed by pouring concrete. The first connecting column 220 includes a first column 223 and a first filling layer 224. The first end 221 of the first column 223 is connected to the pile column 212 by welding, and the first filling layer 224 is filled in the first column 223. The height of the first filling layer 224 is less than the height of the first column 223, so that the first column 223 retains a cavity to accommodate the connecting component 240.

[0080] Furthermore, in order to facilitate the subsequent assembly of the end beam 400, before the first end 221 of the first column 223 is connected to the pile 212 by welding, a plurality of shear nails 225 can be welded on the outer periphery of the second end of the first column 223, and after the shear nails 225 are protruded from the first column 223, the first column 223 is connected to the pile 212 and the first filling layer 224 is filled in the first column 223.

[0081] The main beam 300 is fixed to the second connecting column 230, and the second connecting column 230 is connected to the first connecting column 220 through the connecting component 240. A gap is left between the first connecting column 220 and the second connecting column 230. The connecting component 240 is provided with an arcuate surface 240a, and the arcuate surface 240a of the connecting component 240 is convex toward the second connecting column 230, so that the second connecting column 230 can swing along the arcuate surface 240a relative to the first connecting column 220, so as to eliminate the bending moment caused by the deadweight of the main beam 300.

[0082] Specifically, please refer to Figures 1 to 3The second connecting column 230 includes a second column body 233 and a second filling layer 234. At least part of the structure of the main beam 300 is embedded in the second column body 233 and connected to the second column body 233 as a whole by welding or riveting. The arched portion 241 of the connecting component 240 is placed in the first column body 223, and the connecting portion 242 is inserted into the arched portion 241. The second filling layer 234 is filled in the second column body 233. The second column body 233 with the main beam 300 fixed is installed above the first connecting column 220 by hoisting, and the connecting portion 242 of the connecting component 240 is inserted into the slot 235 of the second filling layer 234, so that the arc surface 240a of the connecting component 240 is convex toward the second connecting column 230, and the second connecting column 230 can swing along the arc surface 240a relative to the first connecting column 220.

[0083] In some embodiments, before the main beam 300 is connected to the second column 233, a plurality of shear nails 225 may be welded on the outer periphery of the second column 233 and the main beam 300 to facilitate subsequent assembly. In other embodiments, the shear nails 225 may also be connected to the main beam 300 by riveting.

[0084] Furthermore, in order to facilitate the swinging of the second connecting column 230, the second end 222 of the first column 223 and the second end 232 of the second column 233 are spaced apart, and a transition piece 201 is welded at the gap to close the second end 222 of the first column 223 and the second end 232 of the second column 233.

[0085] Furthermore, the middle beam is vertically disposed between two adjacent main beams 300 so as to connect the multiple main beams 300 and maintain structural stability.

[0086] The bridge deck 100 is cast to fix the bridge deck 100 to the main beam 300 .

[0087] Specifically, in some embodiments, when the bridge deck 100 is cast in situ, the main beam 300 is used as a support, a formwork is set up, and the bridge deck 100 is poured with concrete, and the formwork is removed after the concrete reaches the designed strength. In other embodiments, when the bridge deck 100 is prefabricated, the prefabricated bridge deck 100 segments are installed first, and then the gaps between the bridge deck 100 segments are poured with concrete to form an integral bridge deck 100 structure.

[0088] In some embodiments, after pouring the bridge deck 100, the interval between the first connecting column 220, the connecting assembly 240 and the second connecting column 230 is sealed and consolidated to form an integral abutment 200. Specifically, the size of the interval between the second end 222 of the first connecting column 220 and the second end 232 of the second connecting column 230 is measured, and the transition piece 201 is welded to the interval. Please refer to Figure 7 and Figure 8, and grouting holes and grouting holes 250 are opened on the first connecting column 220 and / or the second connecting column 230, and grouting material or cement mortar 600 is filled into the cavity surrounding the connecting assembly 240 through the grouting holes and the grouting holes 250, and the grouting material or cement mortar 600 is cured. After the grouting material or cement mortar 600 is sealed and solidified, the first connecting column 220 and the second connecting column 230 are connected from bottom to top to form an integral abutment 200. In other embodiments, if there is no gap between the first connecting column 220, the connecting assembly 240 and the second connecting column 230, after the bridge deck 100 is cast, it is not necessary to seal and solidify the first connecting column 220, the connecting assembly 240 and the second connecting column 230.

[0089] Furthermore, the end beam 400 is cast. Specifically, the end beam 400 and the bottom formwork are installed, the steel bars of the end beam 400 are tied, the side formwork is installed and concrete is cast, and the bottom formwork and the side formwork are removed after the concrete reaches the designed strength, so that the end beam 400 is fixedly connected with the second connecting column 230, the first connecting column 220 and the bridge deck 100.

[0090] In some embodiments, after pouring the bridge deck 100, the gaps between the first connecting column 220, the connecting assembly 240, and the second connecting column 230 are sealed and consolidated to form an integral abutment 200. In other embodiments, after pouring the bridge deck 100 and the end beam 400, the gaps between the first connecting column 220, the connecting assembly 240, and the second connecting column 230 are sealed and consolidated to form an integral abutment 200, which can better eliminate the bending moment generated by the deadweight of the main beam 300, the bridge deck 100, and other components, and can better absorb the horizontal deformation of the bridge.

[0091] Furthermore, the backfilling and pouring of the slab 500 are completed, and finally the paving of the bridge deck is completed to stabilize the bridge structure and prevent the end of the bridge from settling.

[0092] The above-mentioned method for constructing a bridge without expansion joints connects the main beam 300 to the second connecting column 230. The second connecting column 230 is connected to the first connecting column 220 through a connecting assembly 240, and the second connecting column 230 can swing along the arc surface 240a relative to the first connecting column 220, thereby eliminating the bending moment caused by the deadweight of the main beam 300 during construction and increasing the bending resistance of the connection between the first connecting column 220 and the second connecting column 230; the bridge deck 100 is cast and the first connecting column 220, the connecting assembly 240 and the second connecting column 230 are sealed and consolidated to form an integral abutment 200, which can better absorb the horizontal deformation of the above-mentioned bridge without expansion joints and improve the vertical bearing capacity of the pile foundation 210.

[0093] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An integral abutment, characterized in that: include; Pile foundation; a first connecting column, the first connecting column being fixed to the pile foundation; A second connecting column, wherein the first connecting column and the second connecting column are arranged relatively spaced apart; as well as A connecting assembly, wherein the first connecting column and the second connecting column are connected by the connecting assembly, and the ends of the first connecting column and the second connecting column are spaced apart, and the connecting assembly comprises an arched portion, and the arched portion is provided with an arcuate surface, so that the second connecting column can swing along the arcuate surface relative to the first connecting column; A transition piece is connected to the end intervals of the first connecting column and the second connecting column.

2. The integrated abutment according to claim 1, characterized in that: The connecting assembly includes an arched portion and a connecting portion, wherein the connecting portion is protruding from the arched portion, the arched portion is connected to the first connecting column, and the connecting portion is connected to the second connecting column.

3. The integrated abutment according to claim 2, characterized in that: The arched portion is semi-cylindrical and has a rectangular bottom cross section.

4. The integrated abutment according to claim 2, characterized in that: The arched portion is hemispherical and has a circular bottom cross section.

5. The integrated abutment according to claim 2, characterized in that: The first connecting column includes a first column body and a first filling layer. The first column body is hollow. The first filling layer is filled in the first column body. The height of the first filling layer is smaller than the height of the first column body, so that the first column body retains a cavity to accommodate the arched portion.

6. The integrated abutment according to claim 5, characterized in that: The second connecting column includes a second column body and a second filling layer. The second column body is hollow. The second filling layer is filled in the second column body. The second filling layer is provided with slots to accommodate the connecting portion.

7. The integrated abutment according to claim 6, characterized in that: The filling surface of the second filling layer after being filled in the second column is flat.

8. The integrated abutment according to claim 7, characterized in that: The filling surface of the second filling layer after being filled in the second cylinder is an upward convex arc surface, and the curve radius of the filling surface is greater than the curve radius of the arc surface.

9. The integrated abutment according to any one of claims 6 to 8, characterized in that: The first column and / or the second column is a steel pipe, and the first filling layer and / or the second filling layer is concrete.

10. A method for constructing an integral abutment, characterized in that: For constructing an integral abutment according to any one of claims 1 to 9, the method comprises: Fixing the first connecting column to the pile foundation; The main beam is fixed to the second connecting column, and the second connecting column is connected to the first connecting column through a connecting assembly, and the ends of the first connecting column and the second connecting column are spaced apart, and the connecting assembly includes an arched portion, and the arched portion is provided with an arcuate surface, and the second connecting column can swing relative to the first connecting column along the arcuate surface to eliminate the bending moment caused by the deadweight of the main beam; The transition piece is welded to the interval, and grouting holes and grouting holes are opened on the first connecting column and / or the second connecting column. Grouting material or cement mortar is filled into the cavity surrounding the connecting component through the grouting holes and the grouting holes. After the grouting material or cement mortar is sealed and solidified, the first connecting column and the second connecting column are connected as a whole from bottom to top to form an integral abutment.

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