阅读说明：本技术 一种通过钢横梁与混凝土柱连接的框架桥墩及施工方法 (Frame pier connected with concrete column through steel cross beam and construction method ) 是由 孙树礼 苏伟 张帅 于 2020-06-29 设计创作，主要内容包括：本发明提供一种通过钢横梁与混凝土柱连接的框架桥墩及施工方法,涉及桥梁建造技术领域。框架桥墩包括钢横梁和墩柱,钢横梁与墩柱相接处设钢混结合段,钢混结合段包括顶钢板、底钢板和竖板,钢混结构段上设置剪力钉、加劲肋及肋板,墩柱上方设置墩柱过渡段,主筋和加强筋伸出墩柱顶部预设长度,拼装时,墩柱上的主筋和加强筋穿入钢横梁的底钢板上的预留孔,再在顶钢板上的灌注孔中灌注后浇混凝土,对后浇混凝土进行养护,待后浇混凝土养护完成后实现钢横梁与墩柱间的连接；施工方法与框架桥墩的结构相对应。该结构及施工方法对下方铁路、道路影响小,施工安全风险小,横梁与墩柱拼装速度快、受力可靠、成本低,并可减小了基础受力。(The invention provides a frame pier connected with a concrete column through a steel cross beam and a construction method, and relates to the technical field of bridge construction. The frame pier comprises a steel cross beam and a pier stud, a steel-concrete combination section is arranged at the joint of the steel cross beam and the pier stud, the steel-concrete combination section comprises a top steel plate, a bottom steel plate and a vertical plate, shear nails, stiffening ribs and rib plates are arranged on the steel-concrete structure section, a pier stud transition section is arranged above the pier stud, main ribs and the reinforcing ribs extend out of the top of the pier stud by preset lengths, during assembly, the main ribs and the reinforcing ribs on the pier stud penetrate through reserved holes in the bottom steel plate of the steel cross beam, post-cast concrete is poured into pouring holes in the top steel plate, post-cast concrete is cured, and after post-cast concrete curing is completed, connection between the steel cross beam and the pier stud is realized; the construction method corresponds to the structure of a frame pier. The structure and the construction method have small influence on the railway and the road below, the construction safety risk is small, the assembling speed of the beam and the pier stud is high, the stress is reliable, the cost is low, and the foundation stress can be reduced.)

1. The utility model provides a frame pier through steel crossbeam and concrete column connection which characterized in that: including steel beam and pier stud, the steel beam with the pier stud department of meeting establishes the steel-concrete section that combines, the steel-concrete section that combines includes top steel sheet, end steel sheet and riser, set up shear force nail, stiffening rib and floor in the steel-concrete structure section, the pier stud top sets up the pier stud changeover portion, and main muscle and strengthening rib stretch out the pier stud top and predetermine length, and during the assembly, main muscle and strengthening rib on the pier stud penetrate the steel beam the preformed hole on the end steel sheet, again pour the post-cast concrete in the pouring hole on the top steel sheet, right post-cast concrete carries out the maintenance, treats realize after the post-cast concrete maintenance the steel beam with be connected between the pier stud.

2. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the top steel plate is positioned on the top surface of the reinforced concrete combining section, and the top steel plate is provided with a filling hole and an exhaust hole.

3. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the end steel sheet is located the bottom surface of reinforced concrete joint section, set up a plurality of preformed holes on the end steel sheet, it is a plurality of the preformed hole will a plurality of bar steel sheet regions are cut apart into to the end steel sheet, every the size in preformed hole is greater than the outline of main muscle, every all be equipped with the floor in the bar steel sheet region and strengthen.

4. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the riser is located the reinforced concrete joint section with all around the pier stud meets, simultaneously pier stud center department sets up the riser, this department riser with temporary support in the pier stud corresponds, temporary support corresponds with temporary support post.

5. A framed pier connected to a concrete column through a steel beam according to claim 4, wherein: the pier stud transition section is provided with a transition plate, the transition plate comprises a columnar structure formed by four vertical steel plates in a surrounding mode, the height of the columnar structure is equal to the stacking height of the temporary support column and the temporary support, the upper portion of the transition plate is connected with the steel cross beam, the lower portion of the transition plate is connected with the top of the pier stud, and the transition plate is provided with shear nails and stiffening ribs.

6. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the shear nails are dispersedly arranged on the top steel plate and the vertical plate of the steel beam; the stiffening ribs are dispersedly arranged on the top steel plate and the vertical plate of the steel beam;

and at the joint of the steel beam and the pier stud, the shear nails and the stiffening ribs are connected with post-cast concrete.

7. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the rib plates are arranged on the top steel plate, the vertical plates and the bottom steel plate of the steel beam, a plurality of rib plates are arranged along the inner contour of the steel beam, a plurality of reinforcing steel bar holes are formed in the rib plates, and the perforated reinforcing steel bars penetrate through the reinforcing steel bar holes and are welded and fixed with the vertical plates on two sides.

8. A frame pier connected with a concrete column through a steel beam according to claim 1, wherein: the pier column is prefabricated or cast in place, a pier column transition section is arranged at the top of the pier column, the outer contour shape of the pier column transition section is the same as that of a transition plate of the steel cross beam, and the outer contour size of the pier column transition section is larger than that of other positions of the pier column;

the main reinforcement adopts the reinforcing bar of pier stud self configuration, the strengthening rib anchor is in inside the pier stud.

9. The frame pier connected with the concrete column through the steel cross beam as claimed in claim 1, wherein a form of one-time consolidation is adopted between the steel cross beam and the pier column, a transition plate, a temporary support column and a temporary support are not arranged, a splicing seam is laid at the top of the pier column during construction, and high-strength mortar is adopted as the splicing seam.

10. A construction method of a frame pier connected with a concrete column through a steel cross beam is characterized by comprising the following steps:

firstly, pier stud construction, namely prefabricating and assembling a steel cross beam;

step two, constructing a temporary support column at the top of the pier column, and mounting a temporary support on the temporary support column;

or paving splicing seams on the top surfaces of the piers without arranging temporary support columns and temporary supports;

step three, hoisting the steel beam, aligning the steel beam with the pier stud, and penetrating the main ribs and the reinforcing ribs on the pier stud into the reserved holes in the bottom steel plate;

fourthly, supporting the steel beam through a temporary support, and erecting a beam body above the steel beam;

or, supporting the steel beam through the splicing seam, and erecting a beam body above the steel beam;

pouring post-cast concrete from the pouring holes in the top steel plate to complete the construction of the steel-concrete combined section;

and step six, pouring concrete after maintenance, and finishing construction.

Technical Field

The invention relates to the technical field of bridge construction, in particular to a framed pier connected with a concrete column through a steel cross beam and a construction method.

Background

When projects such as railways, municipal works, highways and the like are crossed with small angles such as the existing railways and roads, the frame type piers are often adopted, the frame piers are used for crossing barriers, and small-span beam bodies such as simply supported beams are arranged above the frame piers, so that the economic efficiency is better.

In the past, a frame pier is usually constructed in a cast-in-place mode, pier columns and cross beams are constructed by a support method, the height of the support is high, the construction risk is large, and the construction interference is large, and if the cross beams are constructed by a prefabricated assembly method, the construction speed can be obviously improved, and the construction interference can be reduced; the cross beam is usually made of a steel structure, the steel structure has the advantages of light dead weight, convenience in transportation and hoisting, particular suitability for a long-span cross beam and the like, but the problems that the joint between the steel cross beam and the pier stud is complex in stress, the steel-concrete connection structure is difficult to process, and how to ensure the rapid assembly between the steel cross beam and the pier stud and the like exist; meanwhile, if the steel beam and the pier stud of the frame pier are assembled at one time and form consolidation between the steel beam and the pier stud, the first-stage self weight of the upper beam body above the frame pier, the second-stage self weight of the bridge deck attachment and the like cause bending of the pier bottom, so that the stress of the foundation is increased, and the difficulty in designing the foundation is often caused. Therefore, it is an urgent problem to develop a frame pier connected with a concrete column through a steel beam and a construction method thereof.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a frame pier connected with a concrete column through a steel cross beam and a construction method, so that the influence on a railway and a road below is small, the construction safety risk is small, the assembly speed of the cross beam and the pier column is high, the stress is reliable, the cost is low, and the stress of a foundation can be reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a frame pier connected with a concrete column through a steel beam, which comprises the steel beam and the pier column, wherein a steel-concrete combining section is arranged at the joint of the steel beam and the pier column, the steel-concrete combining section comprises a top steel plate, a bottom steel plate and a vertical plate, shear nails, stiffening ribs and rib plates are arranged on the steel-concrete structure section, a pier column transition section is arranged above the pier column, main ribs and the stiffening ribs extend out of the top of the pier column by preset lengths, during assembly, the main ribs and the stiffening ribs on the pier column penetrate through reserved holes in the bottom steel plate of the steel beam, post-cast concrete is poured into pouring holes in the top steel plate, the post-cast concrete is cured, and after the post-cast concrete is cured, the connection between the steel beam and the pier column is realized.

Furthermore, the top steel plate is located the top surface of steel-concrete combined section, set up pouring hole and exhaust hole on the top steel plate.

Further, the end steel sheet is located the bottom surface of steel-concrete combination section, set up a plurality of preformed holes on the end steel sheet, it is a plurality of the preformed hole will a plurality of bar steel sheet regions are cut apart into to the end steel sheet, every the size in preformed hole is greater than the outline of owner muscle, every all be equipped with the floor in the bar steel sheet region and strengthen.

Furthermore, the riser is located the steel-concrete joint section with all around the pier stud meets, simultaneously pier stud center department sets up the riser, this department riser with temporary support in the pier stud corresponds, temporary support corresponds with temporary support column.

Furthermore, a transition plate is arranged at the transition section of the pier stud, the transition plate comprises a columnar structure formed by four vertical steel plates in a surrounding mode, the height of the columnar structure is the same as the stacking height of the temporary support column and the temporary support, the upper portion of the transition plate is connected with the steel cross beam, the lower portion of the transition plate is connected with the top of the pier stud, and a shear nail and a stiffening rib are arranged on the transition plate.

Further, the shear nails are dispersedly arranged on the top steel plate and the vertical plate; the stiffening ribs are dispersedly arranged on the top steel plate and the vertical plate of the steel beam; and at the joint of the steel beam and the pier stud, the shear nails and the stiffening ribs are connected with post-cast concrete.

Furthermore, the rib plates are arranged on the top steel plate, the vertical plates and the bottom steel plate of the steel cross beam, a plurality of rib plates are arranged along the inner contour of the steel cross beam, a plurality of reinforcing steel bar holes are formed in the rib plates, and the perforated reinforcing steel bars penetrate through the reinforcing steel bar holes and are welded and fixed with the vertical plates on two sides.

Furthermore, the pier stud is prefabricated or cast in place, a pier stud transition section is arranged at the top of the pier stud, the outer contour shape of the pier stud transition section is the same as that of a transition plate of the steel cross beam, and the outer contour size of the pier stud transition section is larger than that of other positions of the pier stud;

the main reinforcement adopts the reinforcing bar of pier stud self configuration, the strengthening rib anchor is in inside the pier stud.

Furthermore, a one-time consolidation mode is adopted between the steel cross beam and the pier stud, a transition plate, a temporary support column and a temporary support are not arranged, a splicing seam is laid at the top of the pier stud during construction, and high-strength mortar is adopted as the splicing seam.

The invention provides a construction method of a frame pier connected with a concrete column through a steel cross beam, which comprises the following steps:

firstly, pier stud construction, namely prefabricating and assembling a steel cross beam;

step two, constructing a temporary support column at the top of the pier column, and mounting a temporary support on the temporary support column;

or paving splicing seams on the top surfaces of the piers without arranging temporary support columns and temporary supports;

step three, hoisting the steel beam, aligning the steel beam with the pier stud, and penetrating the main ribs and the reinforcing ribs on the pier stud into the reserved holes in the bottom steel plate;

fourthly, supporting the steel beam through a temporary support, and erecting a beam body above the steel beam;

or, supporting the steel beam through the splicing seam, and erecting a beam body above the steel beam;

pouring post-cast concrete from the pouring holes in the top steel plate to complete the construction of the steel-concrete combined section;

and step six, pouring concrete after maintenance, and finishing construction.

The invention has the beneficial effects that:

the invention provides a frame pier connected with a concrete column through a steel cross beam and a construction method, which can obtain the following effects:

1. through setting up the steel crossbeam, alleviateed the crossbeam weight, be convenient for transportation and hoist and mount, construction speed is fast, construction interference is little.

2. Through structures such as shear nails and perforated steel bar shear keys arranged in the steel cross beam, the strength of the connecting part is obviously increased, mutual force transmission between the steel cross beam and post-cast concrete is ensured, the load force transmission path is clear, and the quality is easy to guarantee.

3. The construction tolerance of assembling between steel crossbeam and pier stud is big, assemble simply fast, easily penetrates between pier stud owner muscle and the steel crossbeam, and the rigid connection is formed through the back concreting between the two, and the atress is safe, solves the problem of atress in coordination between steel crossbeam and pier stud.

4. The steel beam and the pier stud are connected in stages, namely the steel beam and the pier stud are hinged firstly and then are solidified, the steel beam and the pier stud are connected through the temporary support firstly, the upper beam body is erected, and then the steel beam and the pier stud are solidified. Thereby avoiding the foundation from being stressed greatly due to one-time consolidation and solving the problem of difficult foundation design.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic front view of a frame pier connected to a concrete column via a steel beam according to an embodiment of the present invention;

fig. 2 is a schematic top-view structural view of a frame pier connected to a concrete column through a steel cross beam according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a pier of a frame pier connected to a concrete column through a steel cross beam according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a steel beam of a frame pier connected to a concrete column through the steel beam according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a steel-concrete joint section of a frame pier connected to a concrete column through a steel cross beam according to an embodiment of the present invention;

fig. 6 is a schematic sectional view-i of fig. 5 illustrating a frame pier connected to a concrete column by a steel beam according to an embodiment of the present invention;

fig. 7 is a schematic sectional view ii-ii of fig. 5 illustrating a frame pier connected to a concrete column by a steel cross beam according to an embodiment of the present invention;

fig. 8 is a schematic sectional view of the iii-iii structure of fig. 5 of a frame pier connected to a concrete column by a steel beam according to an embodiment of the present invention;

fig. 9 is a schematic view of the structure of the section iv-iv of fig. 5 of a frame pier connected to a concrete column by a steel beam according to an embodiment of the present invention;

fig. 10 is a schematic view of a temporary support structure of a frame pier connected to a concrete column by a steel cross beam according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a frame pier connected to a concrete column through a steel cross beam according to a second embodiment of the present invention.

Icon:

1-a steel beam;

2-pier stud;

21-pier column transition section;

3-main reinforcement;

31-reinforcing ribs;

4-a steel-concrete combined section;

5-post-pouring concrete;

6-top steel plate;

61-a perfusion hole;

62-vent hole;

7-bottom steel plate;

71-preformed hole;

8-a vertical plate;

9-a transition plate;

10-shear pins;

11-a rib plate;

12-reinforcing steel bar holes;

13-punching reinforcing steel bars;

14-a stiffener;

15-temporary support columns;

16-a temporary support;

17-splicing seam.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.