CN111827084A - A frame pier connected by a steel beam and a concrete column and a construction method - Google Patents

Abstract

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.

Description

A frame pier connected by a steel beam and a concrete column and a construction method

technical field

The invention relates to the technical field of bridge construction, in particular to a frame bridge pier connected by a steel beam and a concrete column and a construction method.

Background technique

When railways, municipalities, highways and other projects intersect with existing railways, roads, etc. at small angles, frame piers are often used, and frame piers are used to span obstacles, and then small-span beams such as simply supported beams are set above the frame piers, which has better performance. economy.

In the past, the frame piers were often constructed by cast-in-place construction, and the piers and beams were constructed by the bracket method. The height of the brackets is high, the construction risk is large, and the construction interference is large. If the beams are constructed by the prefabricated assembly method, the construction speed can be significantly improved. Interference; beams are often made of steel structures. Steel structures have the advantages of light weight, easy transportation and hoisting, and are especially suitable for large-span beams. However, there are complex forces at the joints between steel beams and pier columns. And how to ensure the rapid assembly between the steel beam and the pier column; at the same time, if the steel beam and the pier column of the frame pier are assembled at one time, and the two are consolidated, the first-phase self-weight of the upper beam body above the frame pier, the bridge The self-weight of the second phase, such as the surface attachment, will cause the pier bottom to be bent, which will increase the stress of the foundation and often cause foundation design difficulties. Therefore, it is an urgent problem to develop a frame pier connected by a steel beam and a concrete column and a construction method.

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.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a frame bridge pier connected with a concrete column through a steel beam and a construction method, so as to realize little impact on the railway and road below, little construction safety risk, fast assembly speed of the beam and the pier column, reliable force and low cost low, and can reduce the foundation force.

In order to achieve the above object, the present invention adopts the following technical solutions:

The present invention provides a frame bridge pier connected by a steel beam and a concrete column, comprising a steel beam and a pier column, a steel-concrete joint section is arranged at the connection between the steel beam and the pier column, and the steel-concrete joint section includes a roof Steel plates, bottom steel plates and vertical plates, shear nails, stiffeners and rib plates are set on the steel-concrete structure section, pier-column transition sections are set above the pier columns, and the main bars and stiffeners protrude from the top of the pier columns by a preset length, When assembling, the main bars and reinforcing bars on the pier column penetrate into the reserved holes on the bottom steel plate of the steel beam, and then pour concrete into the pouring holes on the top steel plate. Concrete is poured for curing, and the connection between the steel beam and the pier is realized after the post-casting concrete curing is completed.

Further, the top steel plate is located on the top surface of the steel-concrete combined section, and the top steel plate is provided with a pouring hole and an exhaust hole.

Further, the bottom steel plate is located on the bottom surface of the steel-concrete combination section, and a plurality of reserved holes are arranged on the bottom steel plate, and the plurality of reserved holes divide the bottom steel plate into a plurality of strip-shaped steel plate areas, each of which is The size of the reserved hole is larger than the outer contour of the main rib, and each strip-shaped steel plate area is provided with a rib for reinforcement.

Further, the vertical plate is located around the connection between the steel-concrete joint section and the pier column, and at the same time, a vertical plate is arranged at the center of the pier column, where the vertical plate is connected to the temporary support in the pier column. Correspondingly, the temporary support corresponds to the temporary support column.

Further, the transition section of the pier column is provided with a transition plate, and the transition plate includes a columnar structure surrounded by four vertical steel plates, the height of which is the same as the superimposed height of the temporary support column and the temporary support. The upper part is connected with the steel beam, the lower part of the transition plate is connected with the top of the pier, and the transition plate is provided with shear nails and stiffeners.

Further, the shear nails are distributed on the top steel plate and the vertical plate; the stiffeners are distributed on the top steel plate and the vertical plate of the steel beam; on the steel beam and the pier Where the columns meet, the shear nails and the stiffening ribs are both connected to the post-cast concrete.

Further, the rib plates are arranged on the top steel plate, the vertical plate and the bottom steel plate of the steel beam, a plurality of the rib plates are arranged along the inner contour of the steel beam, and a plurality of the rib plates are arranged on the rib plate Reinforcing steel holes, through which perforated steel bars pass, and are welded and fixed with the vertical plates on both sides.

Further, the pier column is prefabricated or cast-in-place, and the top of the pier column is provided with a pier column transition section, and the outer contour shape of the pier column transition section is the same as the shape of the transition plate of the steel beam. The outer contour size of the transition section is larger than that of the other positions of the pier;

The main reinforcement adopts the reinforcement provided by the pier column itself, and the reinforcement reinforcement is anchored inside the pier column.

Further, the steel beam and the pier column are in the form of one-time consolidation, and no transition plates, temporary support columns and temporary supports are provided. During construction, splicing joints are laid on the top of the pier columns to splicing. The seams are made of high-strength mortar.

A construction method of a frame pier connected by a steel beam and a concrete column provided by the present invention comprises the following steps:

Step 1, pier and column construction, steel beam prefabricated assembly;

Step 2, construct the temporary support column at the top of the pier column, and install the temporary support on the temporary support column;

Alternatively, lay joints on the top surface of the pier column, without setting up temporary support columns and temporary supports;

Step 3: Hoist the steel beams, align the steel beams with the pier columns, and insert the main bars and reinforcing bars on the pier columns into the reserved holes on the bottom steel plate;

Step 4. Support the steel beam through the temporary support, and erect the beam body above the steel beam;

Or, support the steel beam through the splicing seam, and erect the beam body above the steel beam;

Step 5. Concrete is poured from the pouring hole on the top steel plate to complete the construction of the steel-concrete joint section;

Step 6: Concrete is poured after curing, and the construction is completed.

The beneficial effects of the present invention are:

The invention provides a frame pier and a construction method connected by a steel beam and a concrete column, and the following effects can be obtained:

1. By setting the steel beam, the weight of the beam is reduced, which is convenient for transportation and hoisting, and the construction speed is fast and the construction interference is small.

2. By setting shear nails, perforated steel shear keys and other structures inside the steel beam, the strength of the connection part is significantly increased, ensuring the mutual force transmission between the steel beam and the post-cast concrete, the load force transmission path is clear, and the quality is easy to ensure.

3. The assembly construction tolerance between the steel beam and the pier column is large, the assembly is simple and fast, the main reinforcement of the pier column and the steel beam are easy to penetrate, and the two are rigidly connected by post-casting concrete, and the force is safe, solving the problem of steel beam and pier column the problem of inter-coordination.

4. The steel beam and the pier column are connected in stages, that is, the two are first hinged and then consolidated, first connected through a temporary support, the upper beam body is erected, and then the steel beam and the pier column are consolidated. Thereby, it is avoided that the foundation is subjected to large force due to one-time consolidation, and the problem of difficult foundation design is solved.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic front view structure of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

FIG. 2 is a schematic top-view structural diagram of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

3 is a schematic diagram of a pier structure of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

4 is a schematic structural diagram of a steel beam of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

5 is a schematic structural diagram of a steel-concrete combined section of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

FIG. 6 is a schematic cross-sectional structural diagram of I-I of FIG. 5 of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

FIG. 7 is a schematic view of the cross-sectional structure of FIG. 5 of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

FIG. 8 is a schematic diagram of the cross-sectional structure of FIG. 5 III-III of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

FIG. 9 is a schematic view of the IV-IV cross-sectional structure of FIG. 5 of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

10 is a schematic diagram of a temporary support structure of a frame pier connected by a steel beam and a concrete column according to Embodiment 1 of the present invention;

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

icon:

1- Steel beam;

2 - pier column;

21 - pier-column transition section;

3 - main tendons;

31- stiffener;

4- Steel-concrete combination section;

5- post-cast concrete;

6- Top steel plate;

61-perfusion hole;

62 - exhaust hole;

7- Bottom steel plate;

71- reserved hole;

8- riser;

9- transition plate;

10 - shear nails;

11- Rib;

12- Rebar hole;

13 - perforated steel bars;

14 - stiffener;

15- Temporary support columns;

16 - Temporary support;

17 - Patchwork seam.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts 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 only used for description purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

As shown in FIG. 1-10, it is a schematic structural diagram of a frame pier connected by a steel beam 1 and a concrete column provided in the first embodiment of the present invention. Combined with the accompanying drawings 1-10, the frame pier and the construction method of the frame pier of the invention are described. For description, the specific structure and steps are as follows.

The embodiment of the present invention provides a frame pier connected with a concrete column through a steel beam 1. As shown in Figures 1-9, a frame pier connected with a concrete column through a steel beam 1 includes a steel beam 1 and a pier column. 2. A steel-concrete joint section 4 is set at the connection between the steel beam 1 and the pier column 2. The steel-concrete joint section 4 includes a top steel plate 6, a bottom steel plate 7 and a vertical plate 8. The steel-concrete structure section is provided with shear nails 10 and stiffeners. 14 and the rib plate 11, the pier column transition section 21 is set above the pier column 2, the main bar 3 and the reinforcing bar 31 extend out of the top of the pier column 2 by a preset length, when assembled, the main bar 3 and the reinforcing bar 31 on the pier column 2 penetrate into the steel The reserved hole 71 on the bottom steel plate 7 of the beam 1 is poured into the pouring hole 61 on the top steel plate 6, and the concrete 5 is poured after pouring. Connection with pier 2.

Specifically, the top steel plate 6 is located on the top surface of the steel-concrete combination section 4, and the top steel plate 6 is provided with a pouring hole 61 and an exhaust hole 62; wherein, the pouring hole 61 is used for pouring concrete 5 after pouring, and the exhaust hole 62 ensures the after pouring Exhaust during the construction of concrete 5 to ensure the compactness of the pouring.

Specifically, the bottom steel plate 7 is located on the bottom surface of the steel-concrete combination section 4, and a plurality of reserved holes 71 are provided on the bottom steel plate 7. The plurality of reserved holes 71 divide the bottom steel plate 7 into a plurality of strip-shaped steel plate areas, each reserved for The size of the hole 71 is larger than the outer contour of the main reinforcement 3, and each strip-shaped steel plate area is provided with a rib 11 for reinforcement;

Specifically, the vertical plate 8 is located around the connection between the steel-concrete combination section 4 and the pier column 2, and at the same time, a vertical plate 8 is arranged at the center of the pier column 2, where the vertical plate 8 corresponds to the temporary support 16 in the pier column 2, It is ensured that the steel beam 1 is supported on the temporary support 16 under the action of its own weight, and the temporary support 16 corresponds to the temporary support column 15 .

Specifically, the transition section 21 of the pier column is provided with a transition plate 9. The transition plate 9 includes a columnar structure surrounded by four vertical steel plates, and its height is the same as the superimposed height of the temporary support column 15 and the temporary support 16. The upper part is connected with the steel beam 1, and the lower part of the transition plate 9 is connected with the top of the pier column 2, which is used as the construction template of the post-cast concrete 5, and there is no need to set a temporary formwork when the post-cast concrete 5 is poured; the transition plate 9 is provided with shear nails 10 and the stiffening rib 14, to ensure the force transmission with the post-cast concrete 5, when the frame pier is stressed, it plays the role of strengthening the force.

Specifically, (as shown in FIG. 10) a temporary support column 15 is arranged on the top of the pier 2, a temporary support 16 is arranged above the temporary support column 15, and the temporary support column 15 and the temporary support 16 play the role of supporting the steel beam 1, When the steel beam 1 is supported on the temporary support 16, the steel beam 1 and the pier column 2 are hinged, and no bending moment is transmitted. Only when the concrete 5 is poured after the construction, the steel beam 1 and the pier column 2 form a rigid junction before the second-stage self-weight, live load and other bending moments are transmitted. Therefore, the force of the foundation is greatly reduced, which is beneficial to Basic design.

Specifically, the shear nails 10 are dispersedly arranged on the top steel plate 6 and the vertical plate 8, and play the role of connecting the steel beam 1 and the post-cast concrete 5; Post-cast concrete connection, when the steel beam 1 is subjected to vertical force, the vertical force is transmitted to the post-cast concrete 5 through the shear nails 10. When the steel beam 1 is subjected to a bending moment, the tensile force of the shear nail 10 on one side is used. And the compression resistance of the shear nail 10 on the other side transmits the load to the post-cast concrete 5; the stiffeners 14 are scattered on the top steel plate 6 and the vertical plate 8 of the steel beam 1 to ensure that the steel plate has sufficient stability. Where the beam 1 and the pier column 2 are connected, the stiffening rib 14 is connected with the post-cast concrete 5 ; the connection between the steel plate and the post-cast concrete 5 can be strengthened.

Specifically, the ribs 11 are arranged on the top steel plate 6, the vertical plate 8 and the bottom steel plate 7 of the steel beam 1, and a plurality of ribs 11 are arranged along the inner contour of the steel beam 1 to ensure the integrity and stability of the steel plates. The rib plate 11 is provided with a plurality of reinforcement holes 12, and the perforated reinforcement bars 13 pass through the reinforcement holes 12 and are welded and fixed with the vertical plates 8 on both sides; Force key, when the top steel plate 6, the vertical plate 8 and the bottom steel plate 7 on the steel beam 1 are stressed, through the shearing action of the perforated steel bar 13 and the post-cast concrete 5 poured in the perforated steel bar 13 and the steel bar hole 12, together Provide tensile force, when the vertical plate 8 bears the bending moment or the top steel plate 6 and the bottom steel plate 7 bear the bending moment, the shear nail 10, the rib plate 11 and the perforated steel bar 13 are jointly stressed, which significantly improves the steel beam 1 and the rear. The connection strength between poured concrete 5.

Specifically, the pier column 2 is prefabricated or cast-in-place, and the top of the pier column 2 is provided with a pier column transition section 21. The shape of the outer contour of the pier column transition section 21 is the same as that of the transition plate 9 of the steel beam 1. The outer contour is larger than other positions of the pier column 2 to ensure the connection with the transition plate 9. At the same time, its end face can be used as the bottom formwork of the post-cast concrete 5, and there is no need to erect a temporary formwork during pouring.

Specifically, the main reinforcement 3 adopts the reinforcement provided by the pier column 2 itself, and the reinforcement reinforcement 31 is anchored inside the pier column 2 to ensure that the main reinforcement 3 and reinforcement reinforcement 31 extend into the steel-concrete joint section 4 with sufficient anchorage length. When the steel beam 1 is stressed When pierced, the main rib 3 and the reinforcing rib 31 are anchored and force-transmitted through the post-cast concrete 5, so as to ensure the load transfer with the pier 2, and the reinforcing rib 31 can increase the bending resistance and shear resistance capacity. At the same time, the reserved hole 71 is provided with enough opening space, and the main rib 3 and the reinforcing rib 31 can be easily penetrated, which greatly reduces the construction difficulty.

Specifically, the post-cast concrete 5 adopts one of high-strength concrete, ultra-high performance concrete (UHPC) or self-compacting compensating shrinkage concrete.

A construction method corresponding to a frame pier connected by a steel beam 1 and a concrete column according to the first embodiment of the present invention includes the following steps:

A construction method of a frame pier connected with a concrete column through a steel beam 1, comprising the following steps:

Step 1: The pier column 22 is constructed, and the steel beam 11 is prefabricated.

The second step is to construct the temporary support column 1515 on the top of the pier column 22 , and install the temporary support 1616 on the temporary support column 1515 .

Step 3, hoist the steel beam 11, align the steel beam 11 with the pier column 22, and insert the main rib 33 and the reinforcing rib 3131 on the pier column 22 into the reserved hole 7171 on the bottom steel plate 77.

Step 4: Support the steel beam 11 through the temporary support 1616, and erect the upper beam body of the steel beam 11.

Step 5, pour concrete 55 from the pouring hole 6161 on the top steel plate 66, and complete the construction of the steel-concrete joint section 44.

Step 6: Concrete 55 is poured after curing, and the construction is completed.

The frame pier and the construction method connected with the concrete column through the steel beam 1 of the present embodiment have the following advantages: by setting the steel beam 1, the weight of the beam is reduced, the transportation and hoisting are convenient, the construction speed is fast, and the construction interference is small; The beam 1 is equipped with shear nails 10, perforated steel bars 13 shear keys and other structures, which significantly increases the strength of the connection part, ensuring mutual force transmission between the steel beam 1 and the post-cast concrete 5, the load force transmission path is clear, and the quality is easy to ensure; The assembly between steel beam 1 and pier column 2 has a large construction tolerance, and the assembly is simple and fast. It is easy to penetrate between the main bar 3 of pier column 2 and steel beam 1, and the rigid connection between the two is formed by post-casting concrete, which is safe under force and solves the problem of steel beam. The problem of coordinated stress between 1 and pier column 2; the steel beam 1 and the pier column 2 are connected in stages, that is, the two are hinged and then consolidated, first connected through the temporary support 16, and the upper beam body is erected. Consolidate between the steel beam 1 and the pier column 2; thus avoiding the one-time consolidation, which makes the foundation larger, and solves the problem of difficult foundation design.

Embodiment 2

As shown in FIG. 11 , it is a frame pier connected with a concrete column through a steel beam 1 according to the second embodiment of the present invention. When the foundation force is not controlled, the steel beam 1 and the pier column 2 can adopt the form of one-time consolidation. , including the connection feature associated with the transition plate 9, the temporary support column 15 and the temporary support 16 and the transition plate 9, the temporary support column 15 and the temporary support 16 of the first embodiment, which will not be repeated here; during construction, A splicing joint 17 is laid on the top of the pier column 2. The splicing joint 17 is made of high-strength mortar. During construction, the steel beam 1 is placed on the splicing joint 17. After pouring, pour concrete 5 to complete the assembly between the steel beam 1 and the pier column 2 .

A construction method corresponding to a frame pier connected by a steel beam 1 and a concrete column according to the second embodiment of the present invention includes the following steps:

Step 1. The pier column 2 is constructed, and the steel beam 1 is prefabricated and assembled;

Step 2: Lay splicing joints 17 on the top surface of the pier column 2, without setting the temporary support column 15 and the temporary support 16;

Step 3, hoist the steel beam 1, align the steel beam 1 with the pier column 2, and insert the main rib 3 and the reinforcing rib 31 on the pier column 2 into the reserved hole 71 on the bottom steel plate 7;

Step 4, supporting the steel beam 1 through the splicing seam 17, and erecting the beam body above the steel beam 1;

Step 5, pour concrete 5 after pouring from the pouring hole 61 on the top steel plate 6, and complete the construction of the steel-concrete joint section 4;

Step 6. After curing, pour concrete 5, and the construction is completed.

The frame pier and the construction method connected with the concrete column through the steel beam 1 of the present embodiment have the following advantages: by setting the steel beam 1, the weight of the beam is reduced, the transportation and hoisting are convenient, the construction speed is fast, and the construction interference is small; The beam 1 is equipped with shear nails 10, perforated steel bars 13 shear keys and other structures, which significantly increases the strength of the connection part, ensuring mutual force transmission between the steel beam 1 and the post-cast concrete 5, the load force transmission path is clear, and the quality is easy to ensure; The assembly between steel beam 1 and pier column 2 has a large construction tolerance, and the assembly is simple and fast. It is easy to penetrate between the main bar 3 of pier column 2 and steel beam 1, and the rigid connection between the two is formed by post-casting concrete, which is safe under force and solves the problem of steel beam. The problem of co-stressing between 1 and pier column 2; when the force of the foundation is not controlled, the steel beam 1 and the pier column 2 are in the form of one-time consolidation, and no transition plate 9, temporary support column 15 and temporary support 16 are provided. During construction, a splicing joint 17 is laid on the top of the pier column 2, and the splicing joint 17 is made of high-strength mortar. During construction, the hoisting steel beam 1 is placed on the splicing joint 17, and the main bar 3 and the reinforcing bar 31 are penetrated into the steel-concrete joint section 4. Inside, pour concrete 5 after pouring to complete the assembly between the steel beam 1 and the pier column 2. The assembly speed is fast, the force is reliable, the cost is low, and the foundation force can be reduced.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some or all of the technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

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.

Images