Prefabricated rail stand column connecting node on reinforced concrete beam of double-layer metro depot

Abstract

The utility model relates to the technical field of urban rail transit vehicle base engineering design, in particular to a prefabricated rail stand column connecting node on a reinforced concrete beam of a double-layer metro depot, a column pier is arranged on the reinforced concrete beam, and the section size of the column pier is larger than that of a prefabricated rail stand column. Longitudinal bars in the column piers are anchored in the reinforced concrete beam, joint bars are arranged in the column piers, anchoring steel bars are reserved at the roots of the prefabricated rail stand columns, the anchoring steel bars are inserted into the reserved joint bar height range of the column piers and fixed to the joint bars, and the column piers are formed through pouring. The utility model has the advantages that the problems of difficult connection and great damage to the existing structure caused by different construction and installation of beams, plates and prefabricated upright posts of the double-layer parking garage structure can be effectively solved, and the cost of later-stage embedded steel bar connection and transformation is saved by reserving nodes in early-stage construction.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rail transit vehicle base engineering design, in particular to a prefabricated track column connection node on a reinforced concrete beam of a double-deck subway vehicle depot. Background Art

[0002] The establishment of a double-deck rail transit vehicle base brings about the need to set up an inspection pit on the floor beam of the second-floor warehouse. Normally, the construction of track columns and track laying lags far behind the casting of the main reinforced concrete structure. For a double-deck vehicle base, the main structural beams and slabs constructed in the early stage can be used as the working surface for the later track column construction and track laying construction, but there is a problem of how to reserve a connection between the later constructed track columns and the earlier constructed structural beams. The traditional method is to reserve track column dowels in the structural beams when the inspection pit track columns are cast in place, but this method cannot solve the problem of prefabricated track columns. Summary of the invention

[0003] The purpose of the utility model is to provide a prefabricated track column connection node on the reinforced concrete beam of a double-deck subway vehicle depot based on the above-mentioned deficiencies of the prior art. A cast-in-place transition connection node is set between the prefabricated track column and the reinforced concrete beam of the main structure cast in advance, which can effectively solve the connection between the prefabricated column and the concrete beam cast in advance. The connection structure is conducive to ensuring the connection stability of the prefabricated column under the dynamic load of the train.

[0004] The purpose of this utility model is achieved by the following technical solutions:

[0005] A prefabricated track column connection node on a reinforced concrete beam of a double-deck subway vehicle depot is used to set a prefabricated track column above the reinforced concrete beam of a main structure, and is characterized in that a column pier is set on the reinforced concrete beam, the cross-sectional size of the column pier is larger than the cross-sectional size of the prefabricated track column, the longitudinal reinforcement inside the column pier is anchored in the reinforced concrete beam, the column pier has dowels inside, the root of the prefabricated track column is reserved with anchor steel bars, the anchor steel bars are inserted into the reserved dowel height range of the column pier and fixed in position, and the column pier is formed by pouring concrete.

[0006] A plurality of longitudinal bars are arranged inside the prefabricated track column, and the plurality of longitudinal bars are fixedly connected by arranging stirrups and pouring concrete to form an integral structure.

[0007] The anchoring steel bar and the inserted steel bar are fixedly connected by pouring concrete.

[0008] A building surface layer is arranged above the reinforced concrete beam, the surface height of the column pier is higher than the building surface layer, and the height of the column pier is greater than the length of the anchoring steel bar at the root of the prefabricated track column.

[0009] The column pier is cast with high-grade fine stone concrete.

[0010] The utility model has the advantages of being able to effectively solve the problem of connection difficulties and serious damage to the existing structure caused by the different phases of construction and installation of the structural beams, slabs and prefabricated columns of the double-layer parking garage, and saving the cost of later rebar connection and reconstruction by reserving nodes in the early stage of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0013] like Figure 1 As shown, the marks 1-8 in the figure respectively represent: reinforced concrete beam 1, prefabricated track column 2, building surface layer 3, stirrups 4, longitudinal reinforcement 5, stirrups 6, longitudinal reinforcement 7, column pier 8.

[0014] Example: Figure 1 As shown, in this embodiment, the prefabricated track column connection node on the reinforced concrete beam of the double-deck subway vehicle depot is used for the double-deck subway vehicle depot. The double-deck subway vehicle depot is divided into two layers, the upper layer, by the main structure beams and plates, and the upper layer can be used as a rail transit vehicle inspection pit.

[0015] Specifically, the connection node in this embodiment includes a column pier 8 arranged on a reinforced concrete beam 1, and the cross-sectional size of the column pier 8 is larger than the cross-sectional size of the prefabricated track column 2. The longitudinal reinforcement inside the column pier 8 is anchored in the reinforced concrete beam 1, so that the column pier 8 can form an integral structure with the reinforced concrete beam 1. The column pier 8 has dowel bars inside, and the root of the prefabricated track column 2 is reserved with anchor steel bars. The anchor steel bar is the part of the longitudinal reinforcement 5 inside the prefabricated track column 2 that extends out of the bottom of the prefabricated track column 2. The anchor steel bar is inserted into the reserved dowel height range of the column pier 8 and fixed in position. The column pier 8 is formed by pouring concrete, so that the column pier 8 is connected to the prefabricated track column 2 to form an integral structure, thereby realizing the connection between the prefabricated track column 2 and the reinforced concrete beam 1.

[0016] In this embodiment, the longitudinal reinforcement 5 inside the prefabricated track column 2 is connected by the circumferential stirrups 4 to form an integral structure, so as to improve the structural performance of the prefabricated track column 2. The anchoring steel bars of the prefabricated track column 2 and the dowel bars of the column pier 8 can be connected by stirrups 6 to form an integral structure.

[0017] During construction, this embodiment includes the following steps:

[0018] 1) For the prefabricated track column 2 to be set on the reinforced concrete beam 1, a reinforced concrete column pier 8 is set at its root to achieve a transition effect. The cross-sectional size of the column pier 8 is larger than the prefabricated track column 2, and the height meets the anchoring requirements of the track column steel bars, and the height of the column pier 8 is higher than the building surface layer 3. The longitudinal reinforcement 7 of the column pier 8 is anchored in the reinforced concrete beam 1.

[0019] 2) During the cast-in-place construction phase of the main structure beams and slabs, dowel bars for the longitudinal reinforcement of pier 8 are reserved at the corresponding positions, and the concrete of pier 8 is not poured.

[0020] 3) During the track construction phase, the main structural beams and slabs including the reinforced concrete beam 1 have been cast. The reserved anchoring steel bars at the root of the prefabricated track column 2 are inserted into the reserved dowel height range of the column pier 8, and the two are fixed. The column pier 8 is cast with high-grade fine stone concrete.

[0021] 4) After the concrete of the pier 8 is poured and cured to reach 100% strength, an effective connection between the prefabricated track column 2 and the reinforced concrete beam 1 as the main structure can be achieved.

[0022] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A prefabricated track column connection node on a reinforced concrete beam of a double-deck subway depot, used to set a prefabricated track column above the reinforced concrete beam of the main structure, characterized in that: A pier is arranged on the reinforced concrete beam, the cross-sectional size of the pier is larger than the cross-sectional size of the prefabricated track column, the longitudinal reinforcement inside the pier is anchored in the reinforced concrete beam, the pier has dowels inside, the root of the prefabricated track column is reserved with anchor steel bars, the anchor steel bars are inserted into the reserved dowel height range of the pier and fixed to the dowels, and the pier is formed by casting.

2. The prefabricated track column connection node on the reinforced concrete beam of a double-deck subway depot according to claim 1 is characterized by: A plurality of longitudinal bars are arranged inside the prefabricated track column, and the plurality of longitudinal bars are fixedly connected by arranging stirrups and pouring concrete to form an integral structure.

3. The prefabricated track column connection node on the reinforced concrete beam of a double-deck subway depot according to claim 1 is characterized by: A building surface layer is arranged above the reinforced concrete beam, the surface height of the column pier is higher than the building surface layer, and the height of the column pier is greater than the length of the anchoring steel bar of the track column.

4. The prefabricated track column connection node on the reinforced concrete beam of a double-deck subway depot according to claim 1 is characterized by: The column pier is cast with high-grade fine stone concrete.

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