阅读说明：本技术 一种配置可更换钢连梁的自复位钢管混凝土桥墩结构及其施工方法 (Self-resetting concrete filled steel tube pier structure provided with replaceable steel coupling beams and construction method of self-resetting concrete filled steel tube pier structure ) 是由 程国忠 王宣鼎 刘界鹏 于 2020-06-19 设计创作，主要内容包括：发明提供一种配置可更换钢连梁的自复位钢管混凝土桥墩结构及其施工方法。该桥墩结构包括基础、盖梁、钢管混凝土桥墩以及可更换钢连梁,钢管混凝土桥墩上下端通过自复位式节点分别与基础和盖梁相连,可更换钢连梁左右端通过穿杆式节点与钢管混凝土桥墩相连。所提出的桥梁结构可实现震后功能快速恢复和损害快速修复,施工方便、安全可靠。(The invention provides a self-resetting concrete filled steel tube pier structure with replaceable steel coupling beams and a construction method thereof. The pier structure comprises a foundation, a capping beam, a concrete filled steel tube pier and a replaceable steel coupling beam, wherein the upper end and the lower end of the concrete filled steel tube pier are respectively connected with the foundation and the capping beam through self-resetting type nodes, and the left end and the right end of the replaceable steel coupling beam are connected with the concrete filled steel tube pier through penetrating rod type nodes. The bridge structure can realize quick recovery of functions after an earthquake and quick repair of damage, and is convenient to construct, safe and reliable.)

1. The utility model provides a dispose removable steel coupling beam from restoring to throne concrete filled steel tube pier structure which characterized in that: the bridge comprises a foundation (1), a capping beam (2), two concrete-filled steel tube piers (3) and a replaceable steel connecting beam (4);

the concrete-filled steel tube pier (3) comprises a rectangular hollow steel tube (301) and concrete (302) poured into an inner cavity of the rectangular hollow steel tube. The two concrete filled steel tube piers (3) are arranged above the foundation (1) and are used for supporting the bent cap (2); the lower end of the concrete filled steel tube pier (3) is connected with the foundation (1) through a self-resetting node I (5); the upper end of the concrete filled steel tube pier (3) is connected with the capping beam (2) through a self-resetting node II (50);

the self-resetting node I (5) comprises a pre-buried screw I (501), a node connecting plate I (502) and a pre-pressing spring I (504); a node connecting plate I (502) is welded at an opening at the lower end of the rectangular hollow steel pipe (301); the embedded section of the embedded screw I (501) is embedded into the foundation (1), and the extending section extends out of the upper surface of the foundation (1); the extending section penetrates through the node connecting plate I (502) and then is screwed into the nut; the pre-pressing spring I (504) is sleeved on the extending section of the embedded screw I (501); the pre-pressing spring I (504) is positioned between the node connecting plate I (502) and the nut;

The self-reset node II (50) comprises a pre-buried screw II (510), a node connecting plate II (520) and a pre-pressing spring II (540); a node connecting plate II (520) is welded at an opening at the upper end of the rectangular hollow steel pipe (301); the node connecting plate II (520) plugs the upper end opening of the rectangular hollow steel pipe (301); the embedded section of the embedded screw II (510) is embedded into the bent cap (2), and the extending section extends out of the lower surface of the bent cap (2); the extending section penetrates through the node connecting plate II (520) and then is screwed into the nut; the pre-pressing spring II (540) is sleeved on the extending section of the pre-buried screw II (510); the pre-pressing spring II (540) is positioned between the node connecting plate II (520) and the nut;

the replaceable steel coupling beam (4) is transversely arranged between the two concrete filled steel tube piers (3); two ends of the replaceable steel coupling beam (4) are connected with the concrete filled steel tube pier (3) through a penetrating rod type node (6); the rod penetrating type node (6) comprises a penetrating screw rod (601) and a node end plate (602); the node end plates (602) are arranged on two sides of the concrete-filled steel tube pier (3); holes for the penetration screw rods (601) to penetrate through are reserved in the steel tube concrete pier (3); after the penetrating screw rod (601) penetrates through the concrete filled steel tube pier (3) and the node end plates (602) on the two sides, screw nuts are screwed into the two ends; and two ends of the replaceable steel connecting beam (4) are respectively welded with the node end plate (602).

2. The self-restoring concrete filled steel tube pier structure provided with the replaceable steel coupling beams as claimed in claim 1, wherein: a node stiffening rib I (503) is further welded between the rectangular hollow steel pipe (301) and the node connecting plate I (502).

3. The self-restoration concrete-filled steel tube pier structure provided with replaceable steel coupling beams according to claim 1 or 2, wherein: and a node stiffening rib II (530) is also welded between the rectangular hollow steel pipe (301) and the node connecting plate II (520).

4. The self-restoration concrete-filled steel tube pier structure provided with replaceable steel coupling beams according to claim 1 or 3, wherein: the replaceable steel connecting beam (4) is an I-shaped steel beam; and web stiffening ribs (401) are welded on the web plate surface of the I-shaped steel beam.

5. A construction method for the pier structure according to claim 1, comprising the steps of:

1) pouring a foundation (1), and embedding a pre-buried screw I (501);

2) prefabricating a concrete-filled steel tube pier (3), a replaceable steel connecting beam (4) and a cover beam (2) in a factory; welding a node connecting plate I (502) at the lower end of the concrete-filled steel tube pier (3), and welding a node connecting plate II (520) at the upper end of the concrete-filled steel tube pier (3); the two ends of the replaceable steel connecting beam (4) are welded with node end plates (602); embedding a pre-buried screw II (510) in the cover beam (2);

3) Hoisting the concrete-filled steel tube pier (3) on site; a pre-pressing spring (54) is sleeved on the embedded screw I (501); screwing in the screw cap to realize the connection between the concrete-filled steel tube pier (3) and the foundation (1);

4) hoisting the replaceable steel connecting beam (4) on site; a penetrating screw rod (61) is installed and a screw cap is screwed in; the connection between the replaceable steel coupling beam (4) and the concrete filled steel tube bridge pier (3) is realized;

5) hoisting the bent cap (2) on site; a pre-pressing spring II (540) is sleeved on the pre-buried screw II (510); and screwing the screw cap to realize the connection between the concrete filled steel tube pier (3) and the capping beam (2).

Technical Field

The invention relates to the technical field of building structures, in particular to a self-resetting concrete filled steel tube pier structure with replaceable steel coupling beams.

Background

The existing earthquake-proof design concept takes life protection as a primary target, and the structure is prevented from brittle failure and even collapsing under the action of an earthquake through ductile design. The pier designed according to ductility consumes energy through the plastic hinge generated at the bottom of the pier under the condition of heavy earthquake, the residual deformation after the earthquake is often overlarge, and a large amount of time and funds are needed for maintaining and reinforcing the damaged bridge. The bridge is used as an important component of the lifeline project, can not be repaired in time when seriously damaged, and can seriously affect the rescue work after the disaster. With the development and deepening of engineering earthquake-proof design research, the important development trend of the engineering earthquake-proof design research is gradually changed from the prevention of structural collapse to the realization of the quick recovery of the functions or the quick repair of damages of the structure after an earthquake.

The existing self-resetting bridge structure realizes the quick recovery of the functions of the bridge structure after the earthquake through the prestressed tendons, but the existing self-resetting bridge structure cannot effectively dissipate the earthquake energy. The existing bridge structure with the replaceable energy consumption piece has good energy consumption performance and can realize quick repair of damage after an earthquake, but the existing bridge structure lacks certain self-resetting capability and causes interruption of bridge functions.

Therefore, how to realize the rapid recovery of the function and the rapid repair of the damage of the bridge structure after the earthquake is an urgent technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a self-resetting concrete filled steel tube pier structure provided with replaceable steel coupling beams, and the self-resetting concrete filled steel tube pier structure is used for solving the problems in the prior art.

The technical scheme adopted for achieving the purpose of the invention is that the self-resetting concrete filled steel tube pier structure provided with the replaceable steel coupling beam comprises a foundation, a capping beam, two concrete filled steel tube piers and the replaceable steel coupling beam.

The concrete-filled steel tube bridge pier comprises a rectangular hollow steel tube and concrete poured into an inner cavity of the rectangular hollow steel tube. And the two concrete filled steel tube piers are arranged above the foundation and are used for supporting the bent cap. The lower extreme of steel pipe concrete pier links to each other with the basis through self-resetting formula node I. And the upper end of the concrete-filled steel tube pier is connected with the capping beam through a self-resetting node II.

From restoring to throne node I including pre-buried screw rod I, node connecting plate I and pre-compaction spring I. And a node connecting plate I is welded at the opening of the lower end of the rectangular hollow steel pipe. The embedded section of the embedded screw I is embedded into the foundation, and the extending section extends out of the upper surface of the foundation. The extending section penetrates through the node connecting plate I and then is screwed into the nut. The pre-pressing spring I is sleeved on the extending section of the pre-buried screw rod I. Pre-compaction spring I is located between node connecting plate I and the nut.

The self-resetting node II comprises a pre-buried screw rod II, a node connecting plate II and a pre-pressing spring II. And a joint connecting plate II is welded at an opening at the upper end of the rectangular hollow steel pipe. And the node connecting plate II plugs the opening at the upper end of the rectangular hollow steel pipe. The embedded section of the embedded screw rod II is embedded into the bent cap, and the extending section extends out of the lower surface of the bent cap. And the extending section penetrates through the node connecting plate II and then is screwed into the nut. And the pre-pressing spring II is sleeved on the extending section of the pre-buried screw rod II. And the pre-pressing spring II is positioned between the node connecting plate II and the nut.

The replaceable steel coupling beam is transversely arranged between the two concrete filled steel tube piers. And two ends of the replaceable steel coupling beam are connected with the concrete filled steel tube bridge pier through penetrating rod type nodes. The penetrating rod type node comprises a penetrating screw and a node end plate. The node end plates are arranged on two sides of the concrete filled steel tube bridge pier. And holes for the penetration screw to penetrate through are reserved on the concrete-filled steel tube pier. And after the penetrating screw rod penetrates through the concrete filled steel tube bridge pier and the node end plates on two sides, screw nuts are screwed in two ends of the penetrating screw rod. And two ends of the replaceable steel connecting beam are respectively welded with the node end plates.

Furthermore, a node stiffening rib I is welded between the rectangular hollow steel pipe and the node connecting plate I.

Furthermore, a node stiffening rib II is welded between the rectangular hollow steel pipe and the node connecting plate II.

Furthermore, the replaceable steel connecting beam is an I-shaped steel beam. The web plate surface of the I-shaped steel beam is welded with a web plate stiffening rib.

The present invention also discloses a construction method of the pier structure according to claim 1, comprising the steps of:

1) and pouring a foundation, and embedding the embedded screw I.

2) And prefabricating the concrete-filled steel tube bridge pier, the replaceable steel connecting beam and the capping beam in a factory. A node connecting plate I is welded at the lower end of the concrete filled steel tube pier, and a node connecting plate II is welded at the upper end of the concrete filled steel tube pier. And node end plates are welded at two ends of the replaceable steel connecting beam. And embedding a pre-buried screw rod II in the cover beam.

3) And hoisting the concrete-filled steel tube pier on site. And a pre-pressing spring is sleeved on the pre-buried screw rod I. And the screw nut is screwed in to realize the connection between the concrete-filled steel tube pier and the foundation.

4) And hoisting the replaceable steel coupling beam on site. A through screw is installed and a nut is screwed in. The connection between the replaceable steel coupling beam and the concrete filled steel tube bridge pier is realized.

5) And hoisting the bent cap on site. And a pre-pressing spring II is sleeved on the pre-embedded screw II. And screwing the screw cap to realize the connection between the concrete-filled steel tube pier and the capping beam.

The technical effects of the invention are undoubted:

A. under the working condition of normal use, the self-reset node can realize rigid connection by utilizing the pre-pressure of the pre-pressing spring; under the earthquake working condition, the self-reset node can realize semi-rigid connection by utilizing the compressible characteristic of the pre-pressing spring, so that the energy consumption capacity of the steel connecting beam can be fully utilized;

B. removable even roof beam performance bridge structures power consumption spare and the dual function of fuse, it links to each other with the steel pipe concrete pier through wearing rod formula node, can realize that bridge structures impairs quick replacement after shaking.

Drawings

FIG. 1 is a schematic view of a pier structure;

FIG. 2 is a schematic structural diagram of a self-resetting node I;

FIG. 3 is a sectional view taken along line a-a;

FIG. 4 is a schematic structural diagram of a self-resetting node II;

FIG. 5 is a schematic view of a bar penetrating node structure;

FIG. 6 is a sectional view taken along line b-b;

FIG. 7 is a cross-sectional view taken along line c-c.

In the figure: foundation 1, bent cap 2, steel pipe concrete pier 3, rectangular hollow steel pipe 301, concrete 302, removable steel even roof beam 4, from restoring to the throne formula node I5, pre-buried screw rod I501, node connecting plate I502, node stiffening rib I503, pre-compaction spring I504, from restoring to the throne formula node II 50, pre-buried screw rod II 510, node connecting plate II 520, node stiffening rib II 530, pre-compaction spring II 540, wear pole formula node 6, run through screw rod 601, node end plate 602.

Detailed Description

The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.