ASSEMBLED TYPE PIER COLUMN MEMBER WITH STEEL-CONCRETE COMPOSITE STRUCTURE

Abstract

A segment-assembled type pier column member with a steel-concrete composite structure includes a reinforcement tube embedded in a pile cap, wherein the reinforcement tube is connected with a bottom of a lower segment of a hollow steel tube pier and is poured with concrete, and pier columns in upper and lower segments are reinforced by means of segment connecting and being embedded with local reinforcing meshes. A steel cross beam is connected with an upper segment of the hollow steel tube pier in an assembled way. A pre-stressed tensioning duct is reserved between the steel cross beam and the pier column in the upper segment.

Claims

1. An assembled type pier column member with a steel-concrete composite structure, comprising a pile cap, a pier column and a cross beam, wherein a reinforcement tube is pre-embedded in the pile cap, the pier column is in a hollow tubular structure and is formed by assembling and connecting an upper segment of a pier and a lower segment of the pier, a bottom end of the lower segment of the pier is installed between the reinforcement tube and concrete, the upper segment of the pier is connected with the cross beam in an assembled way via bracket angle steel; and the cross beam is in a pre-stressed structure.

2. The assembled type pier column member with a steel-concrete composite structure according to claim 1, wherein a bottom of the reinforcement tube is welded with a bottom plate, a stiffening ribbed plate is welded between the bottom plate and a reinforcing plate, and the bottom plate and the stiffening ribbed plate are embedded in the concrete of the pile cap.

3. The assembled type pier column member with a steel-concrete composite structure according to claim 1, wherein a top end of the upper segment of the pier is provided with a T-shaped opening hoop, and a bottom end thereof is provided with a flange plate.

4. The assembled type pier column member with a steel-concrete composite structure according to claim 3, wherein a top end of the lower segment of the pier is provided with a flange plate, and a bottom end thereof is provided with radially-distributed stiffening ribbed plates.

5. The assembled type pier column member with a steel-concrete composite structure according to claim 4, wherein reinforcing meshes are connected between the upper segment of the pier and the lower segment of the pier, and a reinforcing mesh clamping sheet is arranged inside an upper end of the lower segment of the pier.

6. The assembled type pier column member with a steel-concrete composite structure according to claim 5, wherein the cross beam is a steel cross beam with an I-shaped cross section.

7. The assembled type pier column member with a steel-concrete composite structure according to claim 6, wherein concrete is poured into the pier column and the cross beam, and the cross beam is further internally penetrated with a pre-stressed steel strand in a post-tensioning method.

8. A construction method of the assembled type pier column member with a steel-concrete composite structure according to claim 1, comprising the following steps of: step 1, prefabricating a pile cap, a pier column and a cross beam; arranging a stiffening ribbed plate at a lower end of a lower segment of a pier, arranging a reinforcing mesh clamping sheet inside a tube wall at the upper end, and arranging a pier connecting ring outside the tube wall; arranging a pier connecting ring outside an lower end of an upper segment of the pier, and arranging a T-shaped opening hoop for lapping I-steel stretched out from a steel cross beam at an upper end thereof; step 2, embedding a pile cap cross section reinforcement tube in the pile cap for ensuring the installation and positioning of the lower segment of the pier and reinforcing stress applied to the segment, then pouring the pile cap; step 3, sheathing the lower segment of the pier on the pile cap cross section reinforcement tube, and pouring concrete to fixedly connect the lower segment of the pier with the pile cap; step 4, connecting pier columns in upper and lower segments through a flange plate, and arranging reinforcing meshes inside the cross section for reinforcing connection; step 5, connecting a hollow steel tube pier column with the steel cross beam, lapping I-steel stretched out from two ends of the steel cross beam in the T-shaped opening hoop arranged at the upper end, and connecting the two in an assembled way through a bolt using bracket angle steel in the meanwhile; step 6, tensioning a pre-stressed steel strand in a transverse direction of the two ends of the steel cross beam using a post-tensioning method; and step 7, pouring concrete into the steel tube and the cross beam from the steel cross beam.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 is a structural schematic diagram of a section-assembled type pier column with a steel-concrete composite structure before pouring concrete in an embodiment of the present invention;

[0034] FIG. 2 is a structural schematic diagram after pouring concrete in FIG. 1;

[0035] FIG. 3 is a design diagram of a cross section of a pile cap in FIG. 1;

[0036] FIG. 4 is a structural schematic diagram of an upper segment of a pier in FIG. 1;

[0037] FIG. 5 is a left view of FIG. 4;

[0038] FIG. 6 is a vertical view of FIG. 4;

[0039] FIG. 7 is a structural schematic diagram of bracket angle steel in FIG. 1;

[0040] FIG. 8 is a right view of FIG. 7;

[0041] FIG. 9 is a schematic diagram of a local reinforcing mesh in FIG. 1;

[0042] FIG. 10 is a top view of FIG. 9;

[0043] FIG. 11 is a schematic diagram of a pile cap cross section reinforcement tube in FIG. 1;

[0044] FIG. 12 is a top view of FIG. 11;

[0045] FIG. 13 is a schematic diagram of a lower segment of a pier in FIG. 1; and

[0046] FIG. 14 is a vertical view of FIG. 13.

[0047] In the figures: 1 refers to pile cap, 2 refers to pile cap cross section reinforcement tube, 3 refers to lower segment of pier, 4 refers to reinforcing mesh clamping sheet, 5 refers to local reinforcing mesh, 6 refers to connecting bolt, 7 refers to upper and lower pier connecting rings, 8 refers to upper segment of pier, 9 refers to pre-stressed steel, 10 refers to anchor, 11 refers to anchor base plate, 12 refers to steel cross beam, 13 refers to transverse connecting bolt, 14 refers to bracket angle steel, and 15 refers to longitudinal connecting bolt.

DETAILED DESCRIPTION

Embodiment:

[0048] The drawings non-restrictively disclose a structural schematic diagram of a preferred embodiment involved in the present invention, and the present invention is further illustrated with reference to the drawings and the embodiments

[0049] FIG. 1 to FIG. 14 show the drawings of a section-assembled type pier column member with a steel-concrete composite structure. Before pouring the pile cap, the pile cap 1 is treated, a pile cap cross section reinforcement tube 2 is pre-embedded and poured, and a groove for placing in a lower segment 3 of the pier is reserved between a top of the pile cap cross section reinforcement tube 2 and a top surface of the pile cap 1, thereby facilitating fabricating an end portion of a hollow steel tube in the lower segment, ensuring the connecting reliability and reinforcing installation and positioning. A stiffening ribbed plate is welded at an end portion of a steel tube pier column in a lower segment to form the lower segment 3 of the pier. When fabricating the lower segment 3 of the pier, the stiffening ribbed plate is arranged at a lower end thereof, a reinforcing mesh clamping sheet 4 is arranged inside an upper end of a tube thereof, a pier connecting ring is arranged outside the lower segment, the lower segment 3 of the pier is embedded in the pile cap 1, concrete connected with the lower segment is poured into the groove, and installation of an upper portion is started after a certain concrete age is reached. A local reinforcing mesh 5 is placed inside an upper portion of the lower segment to install an upper segment 8 of the pier, wherein flange-plate type upper and lower pier connecting rings 7 are arranged outside a lower end of the upper segment 8 of the pier in a prefabricated way, and the upper segment 8 of the pier is connected with the lower segment 3 of the pier via a connecting bolt 6. An upper end of the upper segment is provided with a T-shaped opening outer tube for facilitating lapping I-steel 12 stretched out from the steel cross section. The upper segment 8 of the pier is connected with the steel cross beam 12 longitudinally, and is connected in an assembled way through a transversely connecting bolt 13 and a longitudinally connecting bolt 15 by using bracket angle steel in the meanwhile. The steel cross beam 12 uses an I-shaped cross beam and is provided with a transverse stiffening ribbed plate outside the I-shape in the middle of the two ends, thereby facilitating connecting. The upper segment 8 of the pier is transversely connected with the two ends of the steel cross beam 12, is internally penetrated with transverse pre-stressed steel 9, and is equipped with an anchor 10 at the end portion, tensioning the pre-stressed steel strand in a post-tensioning method. Concrete is poured into the steel cross beam 12 and the steel tube. After a certain concrete age is reached, the upper segment 8 of the pier is transversely connected with the two ends of the steel cross beam 12, tensioning the pre-stressed steel strand in a post-tensioning method. Therefore, the section-assembled type pier column member with a steel-concrete composite structure is formed.

[0050] During construction, the size of the pile cap cross section reinforcement tube, the size of the lower segment of the pier, the size of the connecting bolt, the size of the upper segment of the pier, the size of the pre-stressed steel, the size of the steel cross beam, the size of the transverse connecting bolt, the size of the bracket angle steel and the size of the longitudinal connecting bolt are firstly determined according to the design.

[0051] The embodiments of the invention are described in details above with reference to the drawings, but the invention is not limited to the described embodiments. Various changes, modification, replacement and transformation made to the embodiments by those having ordinary skills in the art without departing from the scope of the principle and technical ideas of the invention shall still fall within the protection scope of the invention.