Support structure for preventing corridor steel beam from falling

Abstract

A support structure for preventing corridor steel beams from falling is characterized in that a limiting key is arranged at the midpoint of the corridor position of the upper end faces of concrete beams of two buildings, the two ends of a main steel beam are erected and fixed to the concrete beams of the two buildings, the two ends of the main steel beam are fixedly connected with steel channel beams in a group respectively, and each group of steel channel beams is arranged at the two ends of the limiting key; the main steel beams and the steel channel beams form a whole frame, and steel bar truss floor bearing plates are laid on the main steel beams. Through the novel support structure, the corridor steel beam can resist extreme conditions such as earthquakes, the corridor steel beam is prevented from overturning and falling, and the anti-seismic capacity and safety of the corridor are improved; and the construction is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a support structure for preventing corridor steel beams from falling. Background Art

[0002] For building units with multiple functions, overhead corridors are often set up to connect them to form a complete whole to facilitate the connection between the two buildings. The span ranges from a few meters to tens of meters. In the length direction of the corridors in modern buildings, steel beams are often used as the main large-span load-bearing components. Since the corridor is not integrated with the buildings at both ends, but connected through connecting nodes, and high-rise buildings themselves will shake slightly, especially when affected by natural disasters, whether the connection between the two ends of the corridor and the building is safe and reliable, and whether the corridor steel beams can maintain their position without falling risks are issues that architectural designers need to consider.

[0003] Due to the large span of the corridor, the conventional design adopts the solution of separating the seismic joint (expansion joint) from the main structure to form an independent building. However, adding seismic joints will lead to the risk of house leakage and occupy space. Another way to deal with it is to use a hinged connection at one end connected to the building structure and a sliding connection at the other end. At this time, necessary calculations need to be performed to ensure that the corridor will not fall and cause risks under the action of a major earthquake. The hinged bearing and the sliding bearing can use finished bearings, but the cost is high and needs to be designed and reserved in advance. When the project scale is large, additional bidding is required, which has an impact on the construction cost and construction period. Summary of the invention

[0004] The purpose of the utility model is to provide a support structure for preventing corridor steel beams from falling. Through the new support structure, the corridor steel beams can withstand extreme conditions such as earthquakes, prevent the corridor steel beams from overturning and falling, and improve the earthquake resistance and safety of the corridor; and it has the advantage of convenient construction.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A support structure for preventing corridor steel beams from falling, wherein limit keys are arranged at the midpoint of the corridor position on the upper end surfaces of the concrete beams of the two buildings, the two ends of the main steel beam are erected and fixed on the concrete beams of the two buildings, the two ends of the main steel beam are respectively fixedly connected to a group of two channel steel beams, each group of channel steel beams is arranged at the two ends of the limit keys, the main steel beam and the channel steel beam form an integral frame, and a steel truss floor deck is laid on the main steel beam.

[0007] At the connection between the main steel beam and the channel steel beam, the end of the channel steel beam is fixed to the web of the I-beam of the main steel beam by welding, or by welding an ear plate to the web of the I-beam of the main steel beam, and fixing the channel steel beam to the main steel beam by bolts, so that the two ends of the corridor support frame can achieve movable lap limit through limit keys.

[0008] The upper end surface of the concrete beam is pre-embedded with a limit key pre-embedded pad, and the limit key is welded to the upper end surface of the limit key pre-embedded pad. The limit key pre-embedded pad provides a welding foundation for the limit key.

[0009] The lower end surface of the limit key embedded pad is provided with a plurality of anchor bars B. The anchor bars B make the connection strength between the embedded plate and the concrete beam higher, thereby improving the connection strength between the limit key and the concrete beam.

[0010] The upper end surface of the concrete beam is pre-embedded with a pre-embedded pad at the position where the upper end surface of the concrete beam contacts the main steel beam, and the pre-embedded pad at the end of the beam is slidably connected to the bottom surface of the main steel beam. The pre-embedded pad at the end of the beam can increase the surface strength of the concrete beam supporting the main beam, prevent the contact part from being damaged by force, and improve the tolerance of the structure.

[0011] A plurality of anchor bars A are arranged on the lower end surface of the beam end embedded pad. The anchor bars A make the connection strength between the embedded plate and the concrete beam higher.

[0012] The beam surface bolts are arranged in the steel bar truss floor deck, which can greatly increase the strength of the steel bar truss floor deck and improve the connection force between the steel bar and the concrete.

[0013] Advantages of utility models

[0014] 1. The utility model uses limit keys fixed on the concrete beams of the building. The two ends of the frame formed by the main steel beams and the channel steel beams are limited by limit keys to achieve a movable limit connection between the corridor support frame and the two buildings. Under extreme conditions such as earthquakes, the support frame can still maintain a certain degree of flexible active overlap under the support of the building concrete beams, thereby improving the earthquake resistance of the corridor.

[0015] 2. The utility model is easy to construct and can be realized without complicated connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a top view of the structure of the utility model;

[0017] Figure 2 for Figure 1 Middle AA section structure diagram;

[0018] Figure 3 for Figure 1 Middle BB section structure diagram;

[0019] Figure 4 for Figure 1 Middle CC section structure diagram;

[0020] The serial numbers and component names in the figure are: 1-main steel beam; 2-channel steel beam; 3-embedded pad at beam end; 31-anchor bar A; 4-embedded pad with limit key; 41-anchor bar B; 5-limit key; 6-concrete beam; 7-reinforced truss floor deck; 8-beam surface bolts. DETAILED DESCRIPTION Example

[0021] A support structure for preventing corridor steel beams from falling, wherein a limit key 5 is arranged at the midpoint of the corridor position on the upper end surface of concrete beams 6 of two buildings, and both ends of a main steel beam 1 are erected and fixed on the concrete beams 6 of the two buildings. Both ends of the main steel beam 1 are respectively fixedly connected to a group of two channel steel beams 2, and each group of channel steel beams 2 is arranged at both ends of the limit key 5. The main steel beam 1 and the channel steel beam 2 form a frame as a whole, and a steel truss floor deck 7 is laid on the main steel beam 1.

[0022] The upper end surface of the concrete beam 6 is pre-embedded with a limit key pre-embedded pad 4, and the limit key 5 is welded to the upper end surface of the limit key pre-embedded pad 4.

[0023] A plurality of anchor bars B41 are arranged on the lower end surface of the limit key embedded pad 4.

[0024] A beam end embedded pad 3 is embedded at the position where the upper end surface of the concrete beam 6 contacts the main steel beam 1 , and the beam end embedded pad 3 is slidably connected to the bottom surface of the main steel beam 1 .

[0025] A plurality of anchor bars A31 are arranged on the lower end surface of the beam end embedded pad 3.

[0026] Beam surface bolts 8 are arranged in the steel bar truss floor deck 7 .

Claims

1. A support structure for preventing corridor steel beams from falling, characterized in that: A limit key (5) is provided at the midpoint of the corridor position on the upper end surface of the concrete beams (6) of the two buildings. The two ends of the main steel beam (1) are mounted and fixed on the concrete beams (6) of the two buildings. The two ends of the main steel beam (1) are respectively fixedly connected to a group of two channel steel beams (2). Each group of channel steel beams (2) is provided at the two ends of the limit key (5). The main steel beam (1) and the channel steel beam (2) form a frame as a whole. A steel truss floor deck (7) is laid on the main steel beam (1).

2. The support structure for preventing the corridor steel beam from falling according to claim 1 is characterized in that: The upper end surface of the concrete beam (6) is pre-embedded with a limit key pre-embedded pad (4), and the limit key (5) is welded to the upper end surface of the limit key pre-embedded pad (4).

3. The support structure for preventing the corridor steel beam from falling according to claim 2 is characterized in that: A plurality of anchor bars B (41) are arranged on the lower end surface of the limit key embedded pad (4).

4. The support structure for preventing the corridor steel beam from falling according to claim 1 is characterized in that: A beam end embedded pad (3) is embedded at the position where the upper end surface of the concrete beam (6) contacts the main steel beam (1), and the beam end embedded pad (3) is slidably connected to the bottom surface of the main steel beam (1).

5. The support structure for preventing the corridor steel beam from falling according to claim 4 is characterized in that: A plurality of anchor bars A (31) are arranged on the lower end surface of the beam end embedded pad (3).

6. The support structure for preventing the corridor steel beam from falling according to claim 1 is characterized in that: Beam surface bolts (8) are arranged in the steel bar truss floor deck (7).

Images