N-shape prefabricated connective split column for underground structures

Abstract

An n-shape connected split column for underground structure comprises a prefabricated reinforced concrete column, n-shape connector, exterior packaged steel sheet, reserved connecting reinforcement and reserved high strength bolt. The subject of the prefabricated reinforced concrete column is an ordinary reinforced concrete column; the reserved connecting reinforcement is reserved on the top and bottom of the prefabricated reinforced concrete column; a high strength bolt is reserved on adjacent side faces. The n-shape connector connects with prefabricated reinforced concrete column through reserved high strength bolt; they are installed in underground structure through reserved connecting reinforcement. The exterior packaged steel sheet is pasted on the exterior of the prefabricated reinforced concrete column, and coadjacent prefabricated reinforced concrete column and connection gap between them is overall packaged to ensure the performance of split column under normal service condition. The present disclosure has clear concept and principle; it is easy to be manufactured, repaired, and installed in a key position of underground structure to decrease the damage of earthquake for an underground structure.

Claims

1. An n-shape prefabricated connective split column for underground structures, the split column comprising: a prefabricated reinforced concrete column, an n-shape connector, an exterior packaged steel sheet, a reserved connecting reinforcement and a reserved high strength bolt; wherein: top surfaces of longitudinal reinforcement of the prefabricated reinforced concrete column are fully extended as the reserved connecting reinforcement; the reserved high strength bolt is soldered on a reinforcement cage of the prefabricated reinforced concrete column; the n-shape connector, being shaped like letter n with two wings and a curvature connecting the two wings, connects with the reserved high strength bolt through reserved bolt holes on the two wings; gaps are left between adjacent prefabricated reinforced concrete columns for placing the n-shape connectors the exterior packaged steel sheet is pasted on the exterior of the prefabricated reinforced concrete columns; and the prefabricated reinforced concrete columns and the gaps are wrapped together by the exterior packaged steel sheet.

2. The split column of claim 1, wherein the prefabricated reinforced concrete column is a reinforced concrete column, configured to be prefabricated with a suitable size from a reinforced concrete component processing plant and to be transported as well as assembled on site.

3. The split column of claim 1, wherein the top surfaces of longitudinal reinforcement of the prefabricated reinforced concrete column are fully extended during a prefabrication process, stretching-length of the prefabricated reinforced concrete column is not less than 50 cm for the reserved connecting reinforcement to be connected to top and bottom beams of the prefabricated reinforced concrete column.

4. The split column of claim 1, wherein a 10 cm high strength bolt is soldered to the reinforcement cage of the prefabricated reinforced concrete column during a prefabrication process of the prefabricated reinforced concrete column, and stretching-length of the 10 cm high strength bolt that extends from a side face of the reinforced concrete column is not less than 5 cm as the reserved high strength bolt after concrete pouring.

5. The split column of claim 1, wherein the reserved high strength bolt is reserved on adjacent side faces of the prefabricated reinforced concrete column during a prefabrication process of the prefabricated reinforced concrete column, at least four reserved high strength bolts constitute a bolt group, the bolt group is distributed with an equal interval along with a height direction of the prefabricated reinforced concrete column, and interval ranges are from 1 m to 1.5 m.

6. The split column of claim 1, wherein the n-shape connector is made of mild steel with a low yield point, the reserved bolt holes are reserved on the two wings of the n-shape connector, and the prefabricated reinforced concrete columns are connected through a bolt group.

7. The split column of claim 1, wherein the exterior packaged steel sheet is made of 1 cm to 2 cm thick steel sheet.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 illustrates top view of n-shape connected split column.

(2) FIG. 2 illustrates prefabricated reinforced concrete column with reserved connecting reinforcement and high strength bolt.

(3) FIG. 3 illustrates n-shape connector.

(4) FIG. 4 illustrates front view of n-shape connected split column.

(5) FIG. 5 illustrates one application of n-shape connected split column in the underground structure.

(6) As in one or more figures above, 1 refers to the prefabricated reinforced concrete column, 2 refers to the n-shape connector, 3 refers to exterior sheet steel, 4 refers to a reserved connecting reinforcement, and 5 refers to a reserved high strength bolt.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(7) As is shown in FIG. 1-5, A kind of n-shape connected split column for an underground structure comprising: prefabricated reinforced concrete column (1), n-shape connector (2), exterior packaged steel sheet (3), reserved connecting reinforcement (4) and reserved high strength bolt (5); top of longitudinal reinforcement of prefabricated reinforced concrete column (1) are fully extended as reserved connecting reinforcement (4); reserved high strength bolt (5) is soldered on reinforcement cage of prefabricated reinforced concrete column (1); n-shape connector (2) connects with reserved high strength bolt (5) through its reserved bolt hole on both wings; exterior packaged steel sheet (3) is pasted on the exterior of prefabricated reinforced concrete column (1); coadjacent prefabricated reinforced concrete column and connection gap between them is overall packaged.

(8) In this embodiment, the subject of prefabricated reinforced concrete column (1) is ordinary reinforced concrete column. It is prefabricated with suitable size from the reinforced concrete component processing plant and is transported to scene to assemble.

(9) In this embodiment, during prefabrication process of prefabricated reinforced concrete column (1), top surface of longitudinal reinforcement are fully extended, its' stretching-length should be no less than 50 cm as reserved connecting reinforcement (4) to connect with top and bottom beam.

(10) In this embodiment, during prefabrication process of prefabricated reinforced concrete column (1), 10 cm high strength bolt is soldered on reinforcement cage, after finishing of concrete pouring, stretching-length of high strength bolt extends from the side face of the reinforced concrete column should be no less than 5 cm as reserved high strength bolt (5).

(11) In this embodiment, during prefabrication process of prefabricated reinforced concrete column (1), high strength bolt (5) is reserved on adjacent side faces, each 4 or more than 4 high strength bolt constitutes a bolt group, bolt group is distributed with equal interval along with height direction of prefabricated reinforced concrete column, interval ranges from 1 m-1.5 m.

(12) In this embodiment, n-shape connector (2) is made of mild steel with low yield point; bolt hole is reserved on both wings of the n-shape connector (2), prefabricated reinforced concrete columns are connected through bolt group.

(13) In this embodiment, exterior packaged steel sheet (3) is made of 1 cm-2 cm thick steel sheet, exterior packaged steel sheet (3) is pasted on the exterior of the prefabricated reinforced concrete column (1); coadjacent prefabricated reinforced concrete column and connection gap between them is overall packaged.