A construction structure for improving the shear resistance of steel pier columns

Abstract

The invention discloses a construction structure for improving the shear resistance of steel piers, including a cap embedded part, a pier member arranged on the upper part of the cap embedded part, and an internal shear member of the steel pier, wherein the cap embedded part includes a cap, an embedded steel plate in the middle of the cap, embedded steel bars at the lower part of the base steel plate, and embedded anchor bolts at the upper part of the cap, the pier member includes a steel pier body, a steel pier lower stiffening rib, and a steel pier upper stiffening rib, and the internal shear member of the steel pier includes an internal shear key of the pier, a tie steel bar at the lower part of the internal shear key of the pier, a fixing steel bar for fixing the tie steel bar, and an internal partition of the pier. The invention has the following advantages: the structure is simple, the manufacture is convenient, the shear resistance requirements of the connection between the steel pier and the lower structure of the urban large-span pedestrian overpass can be met, the construction cost is saved, the large-span structure reduces the occupation of the municipal road, and the shape is beautiful.

Description

Technical Field

[0001] The invention relates to the technical field of steel pier column construction, in particular to a construction structure for improving the shear resistance of a steel pier column. Background Art

[0002] Urban road pedestrian overpasses are mostly made of steel structures, and their lower parts are generally made of steel piers. Steel piers are usually installed after pre-embedded anchor bolts in the pedestal. The requirements for the pre-embedded anchor bolts and pier installation accuracy are relatively high. Since the anchor bolts need to withstand the tensile force generated by the combined action of the column foot bending moment and axial force, they are not suitable for large-span steel structure bridges. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the background technology and provide a construction structure for improving the shear resistance of steel piers.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a construction structure for improving the shear resistance of steel pier columns, including a cap embedded part, a pier column component arranged on the upper part of the cap embedded part, and an internal shear resistance component of the steel pier column, the cap embedded part includes a cap, an embedded steel plate in the middle of the cap, embedded steel bars at the lower part of the base steel plate, and embedded anchor bolts at the upper part of the cap, the pier column component includes a steel pier column body, a steel pier column lower stiffening rib and a steel pier column upper stiffening rib, the internal shear resistance component of the steel pier column includes an internal shear key of the pier column, a tie steel bar at the lower part of the internal shear key of the pier column, a fixing steel bar for fixing the tie steel bar, and an internal partition of the pier column.

[0005] As a preferred solution, the fixed tie steel bars and the fixed steel bars are both arranged at the lower part of the shear key inside the pier column, and the internal partition of the pier column is arranged at the upper part of the shear key inside the pier column.

[0006] As a preferred solution, the tie steel bars and the fixed steel bars are perpendicular to each other.

[0007] The invention has the following advantages: simple structure, convenient manufacture, able to meet the shear resistance requirements of the connection between the steel piers and the lower structure of the urban large-span pedestrian bridge, saving construction costs, the large-span structure reduces the impact on the occupation of municipal roads, and has beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] Figure 2 It is a side structural schematic diagram of the present invention.

[0010] Figure 3 It is a schematic diagram of the structure of the present invention when viewed from above.

[0011] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0012] As shown in the figure: 1.1, pedestal, 1.2, embedded steel plate, 1.3, embedded steel bars at the bottom of the base steel plate, 1.4, embedded anchor bolts, 2.1, steel pier body, 2.2, stiffening ribs at the bottom of the steel pier, 2.3, stiffening ribs at the top of the steel pier, 3.1, shear keys inside the pier, 3.2, tie steel bars, 3.3, fixing steel bars, 3.4, partitions inside the pier. DETAILED DESCRIPTION

[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0014] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0015] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.

[0016] The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0017] In conjunction with the accompanying drawings, a construction structure for improving the shear resistance of a steel pier column comprises a cap embedded part, a pier column member arranged on the upper part of the cap embedded part, and an internal shear resistance member of the steel pier column, wherein the cap embedded part comprises a cap 1.1, an embedded steel plate 1.2 in the middle of the cap 1.1, embedded steel bars 1.3 at the lower part of the base steel plate, and embedded anchor bolts 1.4 at the upper part of the cap, the pier column member comprises a steel pier column shaft 2.1, stiffening ribs 2.2 at the lower part of the steel pier column, and stiffening ribs 2.3 at the upper part of the steel pier column, and the internal shear resistance member of the steel pier column comprises an internal shear key 3.1 of the pier column, a tie steel bar 3.2 at the lower part of the internal shear key 3.1 of the pier column, a fixing steel bar 3.3 for fixing the tie steel bar 3.2, and an internal partition 3.4 of the pier column.

[0018] As a preferred implementation scheme of this embodiment, the fixed tie bars 3.2 and the fixed bars 3.3 are both arranged at the lower part of the internal shear key 3.1 of the pier column, and the internal partition plate 3.4 of the pier column is arranged at the upper part of the internal shear key 3.1 of the pier column.

[0019] As a preferred implementation scheme of this embodiment, the tie steel bars 3.2 and the fixing steel bars 3.3 are perpendicular to each other.

[0020] In the specific implementation of the present invention, the embedded steel plate in the embedded part of the pedestal is made of Q235B, with a size of 2500*1200*20mm; the embedded steel bar at the bottom of the steel plate is made of HRB400, φ20 ribbed steel bar; the embedded anchor bolts at the top of the pedestal are made of Q235B, with a size of M30*1000m high-strength anchor bolts; the lower stiffening ribs of the steel pier are made of Q355C, with a size of 250*24*300mm; the upper stiffening ribs of the steel pier are made of Q355C, with a size of 200*24*250mm; the internal shear key of the steel pier is made of Q355C, with a size of 200*20*(pier height+900)mm; the tie steel bar and the fixed steel bar at the bottom of the shear key are made of HRB400, φ22 ribbed steel bar; the internal partition of the pier is made of Q355C, with a size of

[0021] 744*16*1544mm steel plate.

[0022] During the construction of the steel pier column, the lower pedestal is constructed in two stages. Before the construction of the lower part of the pedestal, embedded steel bars and embedded steel plates are buried, and the first section of concrete is poured. After the pouring is completed and the design strength is reached, the internal shear members of the steel pier column are installed, and the shear keys at the bottom of the steel pier column are welded to the embedded steel bars in the middle of the pedestal. The steel pier column is fixed with steel wire ropes around it, and the upper concrete of the pedestal and the micro-expansion concrete inside the steel pier column are poured.

[0023] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A construction structure for improving the shear resistance of a steel pier column, characterized in that: It includes a cap embedded part, a pier column component arranged on the upper part of the cap embedded part, and an internal shear member of the steel pier column. The cap embedded part includes the cap, an embedded steel plate in the middle of the cap, embedded steel bars at the lower part of the base steel plate, and embedded anchor bolts at the upper part of the cap. The pier column component includes a steel pier column body, a steel pier column lower stiffening rib and a steel pier column upper stiffening rib. The internal shear member of the steel pier column includes an internal shear key of the pier column, a tie steel bar at the lower part of the internal shear key of the pier column, a fixed steel bar used to fix the tie steel bar, and an internal partition of the pier column. The tie steel bar and the fixed steel bar are both arranged at The lower part of the internal shear key of the pier column, the internal partition of the pier column is arranged on the upper part of the internal shear key of the pier column; the tie steel bars and the fixed steel bars are perpendicular to each other; when the steel pier column is constructed, the lower pedestal is constructed in two times, and the embedded steel bars and the embedded steel plates are buried before the construction of the lower half of the pedestal, and the first section of concrete is poured. After the pouring is completed and the design strength is reached, the internal shear members of the steel pier column are installed, the shear keys at the bottom of the steel pier column are welded to the embedded steel bars in the middle of the pedestal, the steel pier column is fixed with steel wire ropes around, and the upper concrete of the pedestal and the micro-expansion concrete inside the steel pier column are poured.

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