CN203684247U - Earthquake-resistant foundation of multi-story building - Google Patents

Abstract

The utility model discloses an earthquake-resistant foundation of a multi-story building. The earthquake resistance of the multi-story building in a high earthquake occurrence region or a region with relatively high earthquake intensity is improved, and the multi-story building structure is prevented from being directly broken under the action of an earthquake, so that casualties are avoided. The earthquake-resistant foundation comprises a lower raft, longitudinal tracks, transverse tracks, an upper raft and energy dissipation construction bodies, wherein the lower raft is fixedly connected to the tops of pile foundations; the longitudinal tracks and the transverse tracks are fixedly arranged at the top of the lower raft at intervals in transverse and longitudinal directions; the upper raft is arranged on the longitudinal tracks and the transverse tracks; the multi-story building is positioned on the upper raft and is rigidly connected with the upper raft; the energy dissipation construction bodies are fixedly arranged around the outer side of the lower raft.

Description

An anti-seismic foundation of a multi-storey building

technical field

The utility model relates to a building foundation, in particular to an anti-seismic foundation of a multi-storey building.

Background technique

With the continuous improvement of anti-seismic technology for high-rise (above 30-story) buildings, the anti-seismic problem of multi-storey buildings has gradually become a weak link in design, and its safety issues have become increasingly prominent. In the Wenchuan earthquake in 2008, 70 More than 100% of the buildings were destroyed by multi-storey brick-concrete structures. At present, the seismic research of multi-storey buildings is still in its infancy, and there is no special seismic foundation design yet. In houses in earthquake-prone areas, only a certain proportion of horizontal steel bars are arranged in the strip foundations of the inner and outer walls to resist the strong shear stress generated by earthquakes. This traditional, relatively simple anti-seismic method often makes the strength of the foundation too high, and makes the building structure below the third floor become the weak link of the earthquake action. The first, second, and third floors are often directly affected by the earthquake. shredded, resulting in a large number of casualties.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of anti-seismic foundation of multi-storey buildings, so as to improve the anti-seismic performance of multi-storey buildings in earthquake-prone areas or areas with relatively high seismic intensity, and avoid multi-storey building structures being directly damaged by earthquakes. Shred to avoid personal injury.

The technical solution adopted by the utility model to solve its technical problems is as follows:

The utility model relates to an anti-seismic foundation of a multi-storey building, which is characterized in that it comprises: a lower raft board fixedly connected to the top of the pile foundation; The raft is placed on the longitudinal rail and the transverse rail, and the multi-storey building is located on the upper raft and rigidly connected with it; the energy dissipation structure is fixedly arranged around the outer side of the lower raft.

The beneficial effect of the utility model is that it can effectively dissipate and release earthquake energy safely, improve the seismic performance of multi-storey buildings in earthquake-prone areas or areas with relatively high seismic intensity, and prevent multi-storey building structures from being directly damaged by earthquakes. Shred to avoid personal injury.

Description of drawings

This manual includes the following four drawings:

Fig. 1 is the sectional view of the anti-seismic foundation of a kind of multi-storey building of the present utility model;

Fig. 2 is the plan view of the anti-seismic foundation structure of a kind of multi-storey building of the present utility model;

Fig. 3 is a partial enlarged view of the section of the anti-seismic foundation of a multi-storey building of the present invention;

Fig. 4 is a partially enlarged cross-sectional view of an anti-seismic foundation of a multi-storey building of the present invention.

The figure shows component names and corresponding marks: multi-storey building 10, rigid connection key 11, upper raft 20, longitudinal track 21, transverse track 22, sliding lock 23, elastic telescopic member 24, lower raft 30, Pile foundation 31, pile foundation gravel filler 31a, pile foundation high-strength fiber wrapping layer 31b, rigid connection member 32, energy dissipation structure 40, elastic expansion body 41, seismic elastic stopper 42, damping device 43

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1 and Fig. 2, the anti-seismic foundation of a kind of multi-storey building of the present utility model comprises: lower floor raft 30, is fixedly connected to the top of pile foundation 31; The top of the lower raft 30; the upper raft 20, placed on the longitudinal rail 21 and the transverse rail 22; the multi-storey building 10, located on the upper raft 20, and rigidly connected with it; the energy dissipation structure 40, fixedly arranged on Around the outside of the lower raft 30, the excessive displacement of the upper raft 20 under the action of the earthquake is limited, and at the same time, the huge energy generated by the earthquake is absorbed and dissipated by its own elastic deformation.

Figures 3 and 4 show a detailed layout of the energy dissipation structure 40, that is, the energy dissipation structure 40 includes an elastic telescopic body 41 fixed outside the middle side wall of the upper raft 20 and an anti-seismic structure outside the four corner side walls. The elastic block 42 and the damping device 43 are fixedly arranged on the side wall of the upper raft 20 and the anti-seismic elastic block 42 .

When an earthquake occurs, the multi-storey building 10 and the upper raft 20 move together and repeatedly collide with the energy-dissipating structure 40, and the energy-dissipating structure 40 undergoes elastic deformation, thereby safely dissipating and releasing the earthquake energy. At the same time, the damping device 43 installed between the anti-seismic elastic stopper 42 and the upper raft 20 will immediately play a role, constantly absorbing the energy generated by the earthquake, so that the displacement and amplitude of each collision gradually decrease until the vibration stop.

Referring to FIG. 4 , the upper raft 20 is connected to the lower raft 30 through distributed rigid connection keys 11 , and the rigid connection keys 11 can generally be high-strength concrete keys. Under normal conditions without earthquake action, these rigid connecting keys 11 play an important role in the wind resistance of the multi-storey building 10, preventing the multi-storey building 10 from overturning under the action of wind force. When an earthquake occurs, these rigid connecting keys 11 will break automatically under the impact of earthquake force, so that the upper raft 20 can slide freely along the longitudinal track 21 or the transverse track 22, and collide with the energy dissipation structure 40 to generate elastic energy dissipation.

Referring to FIG. 3 , in order to further prevent the multi-storey building 10 from overturning under the action of wind, in addition to the distributed rigid connection keys 11 , a sliding lock 23 is provided between the upper raft 20 and the longitudinal rail 21 and the transverse rail 22 . The longitudinal track 21 and the transverse track 22 are fixedly arranged in the groove on the upper part of the lower raft 30 through a rigid connecting member 32, and an elastic telescopic member 24 is arranged between the longitudinal track 21, the transverse track 22 and the side wall of the groove. These sliding locks 23 are all locked at ordinary times, and under the violent impact of earthquake, sliding locks 23 can be opened automatically, allow upper floor raft 20 vertical track 21 or transverse track 22 to slide freely.

Referring to Fig. 4, in order to enhance the seismic performance of the foundation where the lower raft 30 is located and greatly increase the stability of the foundation under earthquake action, the pile foundation 31 uses wrapped gravel piles to reinforce the bearing layer of the foundation, that is, the pile foundation 31 is crushed by the pile foundation. The stone filler 31a and the pile foundation high-strength fiber wrapping layer 31b wrapping its outer surface are composed.

The above are just some principles of the anti-seismic foundation of a kind of multi-storey building of the utility model with illustrations, not to limit the utility model to the specific structure and scope of application shown and described, so every possible use The corresponding amendments and equivalents all belong to the patent scope of the utility model application.

Claims (6)

1. an earthquake proof foundation for multistory building, is characterized in that it comprises: lower floor's raft plate (30), is fixedly connected on the top of pile foundation (31); Long rails (21) and cross track (22), horizontal, longitudinal separation is fixedly installed on lower raft plate (30) top; Upper strata raft plate (20), is placed in long rails (21) and cross track (22) upper, and multistory building (10) is positioned at upper strata raft plate (20) above and is rigidly connected with it; Power consumption tectosome (40), is fixedly installed on lower raft plate (30) outside surrounding.

2. the earthquake proof foundation of a kind of multistory building as claimed in claim 1, it is characterized in that: described power consumption tectosome (40) comprises the elastic telescopic body (41) that is fixedly installed on outside the sidewall of upper strata raft plate (20) middle part and the antidetonation flexible block (42) outside four jiaos of sidewalls, and be fixedly installed on the damping unit (43) of upper strata raft plate (20) sidewall and antidetonation flexible block (42).

3. the earthquake proof foundation of a kind of multistory building as claimed in claim 1, is characterized in that: the key that is rigidly connected (11) that described upper strata raft plate (20) arranges by distribution is connected with lower floor's raft plate (30).

4. the earthquake proof foundation of a kind of multistory building as claimed in claim 1, is characterized in that: between described upper strata raft plate (20) and long rails (21), cross track (22), be provided with sliding shackle (23).

5. the earthquake proof foundation of a kind of multistory building as claimed in claim 4, it is characterized in that: described long rails (21), cross track (22) are fixedly installed on by rigid connection member (32) in the groove on lower floor's raft plate (30) top, between long rails (21), cross track (22) and recess sidewall, elastic telescopic member (24) are set.

6. the earthquake proof foundation of a kind of multistory building as claimed in claim 1, is characterized in that: described pile foundation (31) is made up of the pile foundation high-intensity fiber integument (31b) of pile foundation rubble filler (31a) and its external surface of parcel.

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