CN110983958A - Integral abutment and construction method - Google Patents

Abstract

The invention relates to an integral abutment and a construction method, wherein the integral abutment comprises the following components: a pile foundation; the first connecting column is fixed on the pile foundation; a second connecting column; and the first connecting column and the second connecting column are connected through the connecting assembly, the connecting assembly comprises an arc-shaped part, and the arc-shaped part is provided with an arc-shaped surface, so that the second connecting column can swing along the arc-shaped surface relative to the first connecting column. The integral abutment construction method comprises the following steps: fixing the first connecting column to the pile foundation; fixing the main beam on a second connecting column, connecting the second connecting column with the first connecting column through a connecting assembly, wherein the ends of the first connecting column and the second connecting column are arranged at intervals; the end part interval between the first connecting column and the second connecting column is sealed and fixed to be connected into a whole. The integral bridge abutment and the construction method have strong horizontal deformation resistance and vertical bearing capacity.

Description

Integral abutment and construction method

Technical Field

The invention relates to the technical field of bridges, in particular to an integral abutment and a construction method.

Background

The bridge can take place flexible deformation when temperature variation, for eliminate to warp to the structure influence, sets up coupling assembling between first spliced pole and second spliced pole usually to reduce the moment of flexure that component erection process arouses. Most of the existing connecting assemblies are complex in structure, inconvenient to install and complex in stress, and cannot be applied to a concrete filled steel tube column type structure.

Disclosure of Invention

Therefore, it is necessary to provide an integral abutment and a construction method for solving the problems of complicated structure and inconvenient installation of the connecting assembly.

A one-piece abutment comprising:

a pile foundation;

the first connecting column is fixed on the pile foundation;

a second connecting column; and

coupling assembling, first spliced pole reaches the second spliced pole passes through coupling assembling connects, just first spliced pole with the tip interval of second spliced pole sets up, coupling assembling contains the arch, the arch is equipped with the arcwall face, so that the second spliced pole can for first spliced pole is followed the arcwall face swing.

Foretell integral abutment, first spliced pole are held through coupling assembling with the second of second spliced pole and are connected, and the second spliced pole swings along the arcwall face for first spliced pole, and coupling assembling simple structure and simple to operate have strengthened the turnability of first spliced pole and second spliced pole junction, can absorb the horizontal deformation of bridge better.

In one embodiment, the connecting assembly includes an arch portion and a connecting portion, the connecting portion is convexly disposed on the arch portion, the arch portion is connected to the first connecting column, and the connecting portion is connected to the second connecting column.

In one embodiment, the arch part is semi-cylindrical and the cross section of the bottom surface is rectangular.

In one embodiment, the arch part is hemispherical and the cross section of the bottom surface is circular.

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

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

In one embodiment, a filling surface of the second filling layer filled in the second column is planar.

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

In one embodiment, the first column and/or the second column are steel pipes, and the first filling layer and/or the second filling layer are/is concrete.

An integral abutment construction method comprises the following steps:

fixing the first connecting column to the pile foundation;

fixing a main beam on a second connecting column, connecting the second connecting column with the first connecting column through a connecting assembly, wherein the end parts of the first connecting column and the second connecting column are arranged at intervals, the connecting assembly comprises an arch part, the arch part 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 bending moment caused by pressing the second connecting column under the self weight of the main beam;

welding the transition piece to the interval, arranging a grouting hole and a grout outlet on the first connecting column and/or the second connecting column, filling grouting materials or cement mortar into a cavity surrounding the connecting assembly through the grouting hole and the grout outlet, and connecting the first connecting column and the second connecting column into a whole from bottom to top after the grouting materials or the cement mortar are sealed and solidified to form the integral abutment.

According to the integral abutment construction method, the first connecting column is connected with the second end of the second connecting column through the connecting assembly, the connecting assembly is simple in structure and convenient to install, the second connecting column can swing along the arc-shaped surface relative to the first connecting column, the rotation capacity of the joint of the first connecting column and the second connecting column is enhanced, the bending moment caused by the dead weight of the main beam during construction is eliminated, the horizontal deformation of the bridge is well absorbed, the first connecting column and the second connecting column are connected into a whole after closed consolidation, and the vertical bearing capacity of a pile foundation is improved.

Drawings

FIG. 1 is a side view of a non-expansion joint bridge in an embodiment (wherein the first connecting column and the second connecting column are not connected);

fig. 2 is an exploded view of a second connecting column of the bridge without expansion joint shown in fig. 1;

fig. 3 is a schematic connection diagram of a second connection column and a main girder of the bridge without expansion joint shown in fig. 1;

FIG. 4 is a partial front view of a non-expansion joint bridge in an embodiment (wherein the first connecting columns and the second connecting columns are not connected);

FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 4;

FIG. 6 is a side view of an embodiment of a non-expansion joint bridge (in which the first connecting columns and the second connecting columns are connected);

FIG. 7 is a partial front view of a non-expansion joint bridge in an embodiment (in which the first connecting columns and the second connecting columns are connected);

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a partial front view of a monolithic abutment in another embodiment (with a first connecting post and a second connecting post connected);

FIG. 10 is a cross-sectional view taken along plane C-C of FIG. 9;

FIG. 11 is a partial front view of a monolithic abutment in a further embodiment (with a first connecting post and a second connecting post connected);

FIG. 12 is a cross-sectional view taken along plane D-D of FIG. 11;

FIG. 13 is a partial front view of a monolithic abutment in yet another embodiment (with a first connecting post and a second connecting post connected);

fig. 14 is a cross-sectional view taken along plane E-E of fig. 13.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 6, an embodiment of a bridge without expansion joints includes a bridge deck 100, an integral abutment 200, a main beam 300, and an end beam 400.

Referring to fig. 1, the integral bridge abutment 200 includes a pile foundation 210, a first connecting column 220, a second connecting column 230 and a connecting assembly 240, wherein a first end 221 of the first connecting column 220 is fixed to the pile foundation 210, a first end 231 of the second connecting column 230 is used for connecting and supporting the bridge deck 100, a second end 222 of the first connecting column 220 and a second end 232 of the second connecting column 230 are connected by the connecting assembly 240, referring to fig. 4, the connecting assembly 240 is provided with an arc-shaped surface 240a, and the arc-shaped surface 240a protrudes toward the second connecting column 230, so that the second connecting column 230 can swing along the arc-shaped surface 240a relative to the first connecting column 220.

Specifically, referring to fig. 1, the pile foundation 210 includes a pile body 211 and a pile 212, the pile 212 is inserted into the pile body 211 and partially exposed, and the partially exposed pile 212 is connected to the first end 221 of the first connecting post 220.

In some embodiments, the stud 212 is connected to the first end 221 of the first connecting post 220 by welding. In other embodiments, the stud 212 and the first end 221 of the first connecting post 220 may also be connected by riveting.

In some embodiments, the pile body 211 is the concrete, pile 212 is hollow steel pipe, because the pile foundation 210 is great and fragile with first connecting post 220 junction atress, if directly insert first connecting post 220 and locate in pile foundation 210, difficult the repairing after first connecting post 220 damages, thereby influence the bridge and use, predetermine the moment of bending that pile 212 can reduce the bearing of first connecting post 220 on the pile body 211, prolong the life of first connecting post 220, and the cooperation through concrete and hollow steel pipe, can absorb the level and the longitudinal deformation of bridge better, improve the vertical bearing capacity of pile foundation 210 simultaneously. In other embodiments, pile 211 is concrete, pile 212 is concrete, and pile 212 is integrally connected to pile 211.

In some embodiments, pile 212 is a single layer hollow steel tube. In other embodiments, the pile 212 may also be a double-layer single-layer hollow steel pipe, that is, two layers of steel pipes are coaxially sleeved, and concrete is poured into the cavity between the two layers of steel pipes, so as to improve the vertical bearing capacity and horizontal deformation resistance of the pile foundation 210.

In some embodiments, the pile body 211, the pile 212, and the first connecting column 220 are cylindrical and coaxially disposed, so as to facilitate the stress balance of the pile foundation 210 and improve the structural stability. In other embodiments, the pilings 211, 212, and 220 can also be square columns, prisms, or other irregular shapes.

Referring to fig. 4, the connecting member 240 includes an arc portion 241 and a connecting portion 242, the arc surface 240a is disposed on the arc portion 241, the connecting portion 242 is protruded on the arc portion 241, the arc portion 241 is connected to the first connecting post 220, and the connecting portion 242 is connected to the second connecting post 230.

Specifically, referring to fig. 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 that of the first column 223, so that a cavity (not shown) can be reserved at the upper end of the first column 223 to accommodate the arch portion 241.

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

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

In some embodiments, the arc surface 240a is disposed on the arc portion 241, the arc surface 240a protrudes toward the second connection post 230, the arc portion 241 is connected to the first connection post 220, and the connection portion 242 is connected to the second connection post 230. In other embodiments, the arc-shaped surface 240a protrudes toward the second connecting post 230, the connecting portion 242 is connected with the first connecting post 220, and the arc-shaped portion 241 is connected with the second connecting post 230.

Referring to fig. 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, and a slot 235 is formed in the middle of the second filling layer 234 to accommodate the connecting portion 242.

In some embodiments, the second column 233 is a hollow steel tube and the second filler layer 234 is concrete. In other embodiments, the second column 233 may also be a concrete column.

In some embodiments, referring to fig. 5, the connecting portion 242 has a rectangular column shape, and the slot 235 has a rectangular shape to match with the connecting portion 242, so as to better position the second connecting post 230, and if the connecting portion 242 has a cylindrical shape, the second connecting post 230 is easily rotated around the connecting portion 242 with respect to the first connecting post 220, so as to increase the torque of the first connecting post 220, thereby affecting the structural stability of the integral bridge abutment 200. In other embodiments, the connecting portion 242 may have a prism shape or other irregular shape, and the slot 235 may have a prism shape or other irregular shape.

In some embodiments, the arch portion 241 and the connecting portion 242 are a split structure, the arch portion 241 has an accommodating space, and the connecting portion 242 is directly inserted into the accommodating space, so that the assembly is convenient. In other embodiments, the arched portion 241 and the connecting portion 242 may be an integral structure, which has good integrity and high strength.

In some embodiments, the number of the connecting portions 242 is one and is located at the center of the arch portion 241, so that the connecting device is stressed evenly. In other embodiments, the number of the connecting portions 242 may also be at least two and the connecting portions are spaced apart from each other and arranged in the arc portion 241.

In some embodiments, the integral abutments 200 are provided in a plurality and spaced apart side-by-side to stabilize the bridge structure. In other embodiments, the plurality of monolithic abutments 200 can also be arranged in a circular array or other irregular arrangement.

Referring to fig. 1 and 4, the main beam 300 is connected to the second connecting column 230, the second connecting column 230 is connected to the first connecting column 220 through the connecting assembly 240, and the bridge deck 100 is poured. Because the main beam 300 is located at one side of the second connecting column 230 and has a weight, the second connecting column 230 is pressed, so that the second connecting column 230 can swing left and right along the arc-shaped surface 240a relative to the first connecting column 220, a bending moment caused by the self weight of the main beam 300 during construction is eliminated, the bending resistance of the joint of the first connecting column 220 and the second connecting column 230 is increased, and the service life of the structure is prolonged.

In some embodiments, referring to fig. 4 and 5, after the second filling layer 234 is filled in the second pillar 233, the filling surface 234a is a plane, the arch 241 is a semi-cylindrical shape and the bottom surface has a rectangular cross section, so that the second connecting pillar 230 swings along the arc 240a of the arch 241 relative to the first connecting pillar 220.

In other embodiments, referring to fig. 9 and 10, the filling surface 234a of the second filling layer 234 filled in the second column 233 is a convex arc surface, and the radius of the curve of the filling surface 234a is greater than the radius of the curve of the arc surface 240a of the arch 241, so as to prevent the arch 241 from interfering with the swing of the second connecting pillar 230, and the arch 241 is a semi-cylindrical shape and has a rectangular bottom surface cross section.

In still other embodiments, referring to fig. 11 and 12, the filling surface 234a of the second filling layer 234 filled in the second pillar 233 is planar, and the arch 241 is hemispherical and has a circular bottom cross-section.

In another embodiment, referring to fig. 13 and 14, the filling surface 234a of the second filling layer 234 filled in the second column 233 is an upward convex arc surface, and the curve radius of the filling surface 234a is larger than the curve radius of the arc surface 240a of the arch portion 241, so as to prevent the arch portion 241 from interfering with the swing of the second connecting pillar 230, and the arch portion 241 is hemispherical and has a circular bottom surface.

Further, referring to fig. 1, in order to facilitate the swing of the second connection column 230 relative to the first connection column 220, the second end 222 of the first connection column 220 and the second end 232 of the second connection column 230 are disposed at an interval, so as to eliminate the bending moment caused by the self weight of the main beam 300 during the construction, the integral bridge abutment 200 further includes a transition piece 201, and the transition piece 201 is disposed at the interval between the second end 222 of the first connection column 220 and the second end 232 of the second connection column 230.

Preferably, in some embodiments, the distance 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 ends 222 and 232 of the first and second connection posts 220 and 230 may be less than 100mm or greater than 300 mm.

In some embodiments, the first connecting column 220 and the second connecting column 230 are hollow cylindrical and are coaxially disposed. In other embodiments, the first connecting column 220 and the second connecting column 230 may also be hollow square columns or other irregular shapes.

In some embodiments, the transition piece 201 is an integral strip structure and surrounds the interval between the first connecting column 220 and the second connecting column 230, the transition piece 201 is connected with the first connecting column 220 and the second connecting column 230 by welding, and the transition piece 201 is made of steel. In other embodiments, transition piece 201 may also be a splice-type structure.

Referring to fig. 1, the main beam 300 is connected to the second connecting 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 penetrates through the matching opening and is connected with the second connection column 230 into a whole, so that the main beam 300 is fixedly connected with the second connection column 230, and the unstable connection and slippage between the main beam 300 and the second connection column 230 are avoided, so that the structure is unstable.

In some embodiments, the main beam 300 is connected to the second connecting column 230 by welding. In other embodiments, the main beam 200 may be connected to the second connecting column 230 by riveting.

In some embodiments, referring to fig. 2, the second connecting column 230 is provided with a matching opening to form a first segment 236, a second segment 237 and a third segment 238, referring to fig. 3, the main beam 300 includes a first wing plate 310, a web 320 and a second wing plate 330, the first wing plate 310 and the second wing plate 330 are oppositely disposed and are both perpendicular or nearly perpendicular to the web 320 so as to make the main beam 300 in an i-shape, the first segment 236 and the second segment 237 are respectively disposed on two opposite sides of the web 320, the first segment 236 and the second segment 237 are sandwiched between the first wing plate 310 and the second wing plate 330, and the third segment 238 is connected to the bottom of the second wing plate 330. In other embodiments, the main beam 300 may also be in a shape like a Chinese character 'wang', an L shape, a W shape, or other irregular shapes, and the number of segments included in the second connecting column 230 may be greater than three and in different splicing manners, as long as a part of the structure of the main beam 300 can be embedded in the second connecting column 230, so as to ensure the stability of the structural connection.

In some embodiments, the first segment 236 and the second segment 237 are semi-circular segments, the third segment 238 is hollow and cylindrical, and the cavity formed by the first segment 236 and the second segment 237 is coaxial with the inner cavity of the third segment. In other embodiments, the first segment 236 and the second segment 237 may be U-shaped, the third segment 238 is a hollow square column, and the cavity formed by the first segment 236 and the second segment 237 is coaxial with the inner cavity of the third segment.

Further, the bridge without expansion joint further includes an intermediate beam (not shown in the figures), in some embodiments, since the number of the main beams 300 is at least two and the plurality of main beams 300 are arranged side by side at intervals, the main beams 300 extend along the transverse direction, and the intermediate beam is vertically arranged between two adjacent main beams 300 and extends along the longitudinal direction, so as to connect the plurality of main beams 300 to ensure the structural stability.

Referring to fig. 6 and 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 spaced apart from the middle beam to reinforce and connect the plurality of integral abutments 200.

Specifically, the end beam 400 includes a bracket and a bracket filling layer (not shown in the drawings), referring to fig. 7, a plurality of shear nails 225 are convexly disposed on the outer peripheries of the first connecting column 220 and the second connecting column 230, and the bracket filling layer is poured on the bracket to fix the bracket filling layer, the shear nails 225 and the bracket, so that the end beam 400 is fixedly connected to the first connecting column 220, the second connecting column 230 and the deck slab 100. The support is the reinforcing bar, and the support filling layer is the concrete.

Further, when the bracket intersects with the web 320 of the main beam 300, referring to fig. 3, a circular hole 301 is formed 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 smoothly pass through the circular hole 301. In other embodiments, the diameter of the circular hole 301 may be less than 2.5 times the diameter of the steel bar, so long as the steel bar can pass through the circular hole 301.

Referring to fig. 7, the non-expansion joint bridge further includes an attachment plate 500, a step surface 110 is formed at a connection portion of the end beam 400 and the bridge deck 100, and the attachment plate 500 is connected to the step surface 110 and integrally connected to the bridge deck 100, so as to prevent the end portion of the non-expansion joint bridge from settling. Specifically, the strap 500 is a reinforced concrete structure.

The bridge without the expansion joint is provided with the integral bridge abutment 200, the integral bridge abutment 200 comprises 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 through the connecting assembly 240, and the second connecting column 230 can swing along an arc-shaped surface 240a relative to the first connecting column 220, so that the horizontal deformation of the bridge can be well absorbed, and the vertical bearing capacity of the pile foundation 210 is improved; part of the structure of the main beam 300 is embedded in the second connecting column 230 and is connected with the second connecting column 230 into a whole, so that the structural connection stability can be improved; the middle beam is vertically arranged between two adjacent main beams 300 to connect a plurality of main beams 300 to ensure stable structure; the end beam 400 and the butt strap 500 are provided to prevent the end of the bridge from settling.

The construction method of the expansion joint-free bridge comprises the following steps:

securing the first connecting column 220 to the pile foundation 210;

specifically, referring to fig. 1, the pile foundation 210 includes a pile body 211 and a pile 212, the pile 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, a first end 221 of the first column 223 is connected with the pile 212 by welding, the first filling layer 224 is filled in the first column 223, and a height of the first filling layer 224 is smaller than a height of the first column 223, so that the first column 223 is retained in the cavity to accommodate the connecting assembly 240.

Further, in order to facilitate the assembly of the subsequent end beam 400, before the first end 221 of the first column 223 is connected to the post 212 by welding, a plurality of shear pins 225 may be welded to the periphery of the second end of the first column 223, and after the shear pins 225 are protruded from the first column 223, the first column 223 is connected to the post 212 and the first filling layer 224 is filled in the first column 223.

The main beam 300 is fixed on the second connecting column 230, the second connecting column 230 is connected with the first connecting column 220 through the connecting component 240, a gap is reserved between the first connecting column 220 and the second connecting column 230, the connecting component 240 is provided with an arc-shaped surface 240a, and the arc-shaped surface 240a of the connecting component 240 protrudes towards the second connecting column 230, so that the second connecting column 230 can swing along the arc-shaped surface 240a relative to the first connecting column 220, and the bending moment caused by the dead weight of the main beam 300 is eliminated.

Specifically, referring to fig. 1 to 3, the second connecting column 230 includes a second column 233 and a second filling layer 234, and at least a part of the structure of the main beam 300 is embedded in the second column 233 and is connected with the second column 233 into a whole by welding or riveting; placing the arch part 241 of the connecting assembly 240 in the first cylinder 223, and inserting the connecting part 242 in the arch part 241; the second filling layer 234 is filled in the second column 233, the second column 233 fixed with the main beam 300 is erected above the first connecting column 220 through the hoisting frame, and the connecting portion 242 of the connecting assembly 240 is inserted in the slot 235 of the second filling layer 234, so that the arc-shaped surface 240a of the connecting assembly 240 protrudes toward the second connecting column 230, and the second connecting column 230 can swing along the arc-shaped surface 240a relative to the first connecting column 220.

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

Further, in order to facilitate the swing of the second connecting rod 230, the second end 222 of the first cylinder 223 and the second end 232 of the second cylinder 233 are spaced apart, and the transition piece 201 is welded at the gap, so that the second end 222 of the first cylinder 223 and the second end 223 of the second cylinder 233 are closed.

Further, the middle beam is vertically installed between two adjacent main beams 300, so that the plurality of main beams 300 are connected and structurally stable.

The deck slab 100 is poured so that the deck slab 100 is fixed to the girder 300.

Specifically, in some embodiments, when the deck slab 100 is cast-in-place, the form is erected and the deck slab 100 is poured through concrete, with the main beams 300 as supports, and the form is removed after the concrete reaches a designed strength. In other embodiments, when the deck slab 100 is prefabricated, prefabricated deck slab 100 segments are installed and then concrete is poured into the gap between the deck slab 100 segments to form the integral deck slab 100 structure.

In some embodiments, after the deck slab 100 is poured, the gap between the first connecting column 220, the connecting assembly 240 and the second connecting column 230 is closed and fixed to form the integral abutment 200. Specifically, the dimensions 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 are measured, the transition piece 201 is welded to the interval, please refer to fig. 7 and 8, a grouting hole and a grout outlet 250 are formed in the first connecting column 220 and/or the second connecting column 230, a grouting material or cement mortar 600 is filled into the cavity surrounding the connecting assembly 240 through the grouting hole and the grout outlet 250, the grouting material or cement mortar 600 is maintained, and 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 into a whole from bottom to top to form the integral bridge abutment 200. In other embodiments, if there is no gap between the first connecting column 220, the connecting member 240 and the second connecting column 230, the first connecting column 220, the connecting member 240 and the second connecting column 230 need not be tightly fixed after the deck slab 100 is poured.

Further, end beams 400 are poured. Specifically, the end beam 400 and the bottom formwork are installed, the reinforcing steel bars of the end beam 400 are bound, the side formworks are installed, the concrete is poured, and the bottom formwork and the side formworks 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.

In some embodiments, after the deck slab 100 is poured, the gap between the first connecting column 220, the connecting assembly 240 and the second connecting column 230 is closed and fixed to form the integral abutment 200. In other embodiments, after the bridge deck 100 and the end beam 400 are poured, the gap between the first connecting column 220, the connecting assembly 240 and the second connecting column 230 is closed and fixed to form the integral abutment 200, so that the bending moment generated by the main beam 300, the bridge deck 100 and other components due to dead weight can be better eliminated, and the horizontal deformation of the bridge can be better absorbed.

Furthermore, filling soil and pouring the butt strap 500 after the platform is finished, and finally, paving the bridge deck is perfected, so that the bridge structure is stable, and the end part of the bridge is prevented from settling.

In the construction method of the non-expansion joint bridge, the main beam 300 is connected to the second connecting column 230, the second connecting column 230 is connected with the first connecting column 220 through the connecting component 240, and the second connecting column 230 can swing along the arc-shaped surface 240a relative to the first connecting column 220, so that the bending moment caused by the dead weight of the main beam 300 during construction is eliminated, and the bending resistance of the joint of the first connecting column 220 and the second connecting column 230 is increased; and pouring the bridge deck 100 and hermetically consolidating the first connecting column 220, the connecting assembly 240 and the second connecting column 230 to form an integral bridge abutment 200, so that the horizontal deformation of the bridge without the expansion joint can be better absorbed, and the vertical bearing capacity of the pile foundation 210 is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An integral abutment, comprising;

a pile foundation;

the first connecting column is fixed on the pile foundation;

a second connecting column; and

coupling assembling, first spliced pole reaches the second spliced pole passes through coupling assembling connects, just first spliced pole with the tip interval of second spliced pole sets up, coupling assembling contains the arch, the arch is equipped with the arcwall face, so that the second spliced pole can for first spliced pole is followed the arcwall face swing.

2. The integral abutment of claim 1, wherein the connecting assembly comprises an arch portion and a connecting portion, the connecting portion is protruded from the arch portion, the arch portion is connected to the first connecting column, and the connecting portion is connected to the second connecting column.

3. The monolithic abutment of claim 2, wherein said arch is semi-cylindrical and rectangular in bottom cross-section.

4. The monolithic abutment of claim 2, wherein said arch is hemispherical and has a circular cross-section at its base.

5. The integral abutment of claim 2, wherein the first connecting post comprises a first post body and a first packing layer, the first post body is hollow, the first packing layer is packed in the first post body, and the height of the first packing layer is smaller than that of the first post body, so that the first post body retains the cavity to accommodate the arch.

6. The integral abutment of claim 2, wherein the second connecting column comprises 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 slotted hole for accommodating the connecting portion.

7. The monolithic abutment of claim 6, wherein the filling surface of the second filling layer after being filled in the second column is planar.

8. The monolithic abutment of claim 7, wherein the filling surface of the second filling layer filled in the second column is an upwardly convex curved surface, and the radius of curvature of the filling surface is greater than the radius of curvature of the curved surface.

9. The monolithic abutment of any one of claims 5 to 8, wherein the first and/or second column is a steel pipe and the first and/or second filling layer is concrete.

10. An integral abutment construction method is characterized by comprising the following steps:

fixing the first connecting column to the pile foundation;

fixing a main beam on a second connecting column, connecting the second connecting column with the first connecting column through a connecting assembly, wherein the end parts of the first connecting column and the second connecting column are arranged at intervals, the connecting assembly comprises an arch part, the arch part 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 bending moment caused by the self weight of the main beam;

welding the transition piece to the interval, arranging a grouting hole and a grout outlet on the first connecting column and/or the second connecting column, filling grouting materials or cement mortar into a cavity surrounding the connecting assembly through the grouting hole and the grout outlet, and connecting the first connecting column and the second connecting column into a whole from bottom to top after the grouting materials or the cement mortar are sealed and solidified to form the integral abutment.

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