CN202530485U

CN202530485U - Substrate swing shock insulating device for pile foundation pier

Info

Publication number: CN202530485U
Application number: CN2012201225441U
Authority: CN
Inventors: 陈兴冲; 夏修身; 曹梦强
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2012-11-14
Anticipated expiration: 2022-03-28

Abstract

The utility model discloses a substrate swing shock insulating device for a pile foundation pier. The substrate swing shock insulating device is structurally characterized by comprising overturn preventing steel stranded wires or a reinforcing steel bars, a pier body, a spread foundation, rubber, a separating surface and a foundation, wherein the pier body is connected with the spread foundation, is perpendicular to the spread foundation and is embedded into the foundation; the circumference of the spread foundation is filled with rubber; the overturn preventing steel stranded wires or reinforcing steel bars are planted into the pier body; one end of each overturn preventing steel stranded wire or reinforcing steel bar is anchored into a pier top; and the other end of each overturn preventing steel stranded wire or reinforcing steel bar is anchored into the foundation. According to the substrate swing shock insulating device disclosed by the utility model, by using the relevant standard design, the pier body is separated from the foundation; and in the process of designing an earthquake or rare occurrence earthquake, earthquake energy is filtered by swinging, so that the service function requirements of the pier under the conditions that the load is normally used and more earthquakes occur are ensured. In addition, in the process of designing the earthquake or rare occurrence earthquake, the pier body is separated from the foundation, and thus the earthquake-resisting goals of protecting the pier and the foundation are achieved.

Description

Earthquake isolating equipment is waved in a kind of substrate of pile foundation bridge pier

Technical field

The utility model relates to and belongs to engineering seismic isolation technology field, is that earthquake isolating equipment is waved in a kind of substrate of pile foundation bridge pier specifically.With waving, earthquake finishes the back pier shaft from horizontal reset to bridge pier, can protect bridge pier can protect the antidetonation target on basis again with respect to the basis under design earthquake or rarely occurred earthquake effect.

Background technology

It is intermittent and uncertain to consider that violent earthquake takes place, and the elastic design of Reinforced Concrete Bridge is uneconomic.The bridge of tensility shock-resistant Design Theory, the earthquake plastic hinge region of pier stud later also will cause permanent permanent set.The damage that permanent set caused, slight person perhaps can repair, but the bearing capacity after repairing is difficult to prediction, and severe patient then need be rebuild, and is not only time-consuming but also make interruption of communication.Existing bearing subtracts, the deformability of earthquake isolating equipment is limited, and suitable frequency range is narrower, and strict service condition is arranged, and can not adapt to the moderate finite deformation of weak soil field ground foundation.The possibility that resonates with the place is arranged behind the isolation bridge on the ground of weak soil field, thereby can not be applicable to weak soil field bridge on the ground.

Summary of the invention

The utility model provides a kind of substrate of pile foundation bridge pier to wave earthquake isolating equipment; This device is not when influencing the normal function of use of bridge; Improve the anti-seismic performance of bridge pier structure; Avoid bridge pier under severe earthquake action, to produce major injury, thereby be that the destruction of resisting earthquake provides reliable guidance.

The purpose of the utility model is achieved in that

Earthquake isolating equipment is waved in a kind of substrate of pile foundation bridge pier, is to be made up of anti-steel strand or reinforcing bar, pier shaft, expansion basis, rubber, parting surface and the basis of toppling.Pier shaft is connected with the expansion basis, and pier shaft is basic perpendicular to enlarging, and embeds in the basis, and with the rubber filling, in anti-topple steel strand or the reinforcing bar implantation pier shaft, an end is anchored in Dun Ding around the expansion basis, and the other end is anchored in the basis.

The advantage of the utility model and the beneficial effect of generation are:

1, shake rear abutment and basis can reach basic not damaged, and integrality is better, and can carry out from resetting through pier shaft deadweight and top dead load gravity; It is less to the design change of existing conventional bridge pier to wave shock insulation, realizes easily, applied widely.

2, can be before the shake owing to seismic design increases more investment; Slight damage does not take place or takes place in the shake rear abutment, can repair or slightly repair and just can use, and has avoided rehabilitation expense after the expensive shake, has reduced repair amount and financial cost after shaking.Guaranteed to have a good transport and communication network, won valuable time, had very big social synthesis's benefit for shaking back earthquake relief work and post-disaster reconstruction.

3, design makes pier shaft separate with the basis to the utility model according to related specifications; And in design earthquake or rarely occurred earthquake bridge pier through waving the filtration seismic energy; Guarantee the function of use requirement of bridge pier under normal service load and frequently occurred earthquake with this; And in design earthquake or rarely occurred earthquake, pier shaft is separated with the basis, reach the antidetonation target that can protect bridge pier can protect the basis again.

Description of drawings

Fig. 1 is the utility model adhesion stage sketch map.

Fig. 2 waves the stage sketch map for Fig. 1.

The specific embodiment

As shown in Figure 1, earthquake isolating equipment is waved in a kind of substrate of pile foundation bridge pier, comprises the anti-steel strand 1 that topple, pier shaft 2, enlarges basis 3, rubber 4, parting surface 5 and basis 6.Pier shaft 2 with enlarge basis 3 and be connected, and pier shaft 2 is perpendicular to enlarging basis 3, and embeds in the basis 6, enlarge basis 3 around fill with rubber 4, in the anti-steel strand 1 implantation pier shaft 2 that topples, an end anchoring and a Dun Ding, the other end are anchored in basic 6.

Normal use and the frequently occurred earthquake effect under, pier shaft 2 does not wave, and has guaranteed the safety of the stable and driving of the overturning or slip resistance analysis of bridge construction.

In design earthquake or rarely occurred earthquake, with waving, through waving the filtration seismic energy, steel strand 1 can prevent that pier shaft from toppling to bridge pier with respect to the basis.

Earthquake finishes rear abutment from horizontal reset, reaches the antidetonation target that in earthquake, can protect bridge pier can protect the basis again with this.

Claims

1. earthquake isolating equipment is waved in the substrate of a pile foundation bridge pier; Be by anti-topple steel strand or reinforcing bar (1), pier shaft (2), enlarge basis (3), rubber (4), parting surface (5) and basis (6) formation; It is characterized in that pier shaft (2) and enlarge basis (3) and is connected, and pier shaft (2) is perpendicular to enlarging basis (3), and embed in basic (6); Enlarge filling with rubber (4) of basis (3) all around; In anti-topple steel strand or reinforcing bar (1) the implantation pier shaft (2), an end is anchored in Dun Ding, and the other end is anchored in the basis (6).