CN205839592U - Anisotropy drag-line stop - Google Patents

Abstract

This utility model relates to a kind of anisotropy drag-line stop, is made up of lower shoe, drag-line, upper plate and slide plate.Lower shoe is made up of steel substrate and anchor bolt；Drag-line is made up of ordinary steel twisted wire and anchorage；Upper plate is made up of steel top board and anchor bolt；Slide plate is made up of steel circle slide plate and polyfluortetraethylene plate.Upper and lower base plate is anchored with beam body and pier (platform) respectively by bolt；Lower end anchorage consolidates with lower shoe, and pre-stretch-draw anchor is then passed through in lower anchorage in drag-line lower end；Drag-line upper end then by pre-stretch-draw anchor in upper anchorage, upper anchorage pastes polyfluortetraethylene plate with circular slide plate consolidation, circular slide plate bottom surface.Upper plate center has a slotted eye, and the value of major axis and short axle by arranging elliptical aperture realizes the value that freely stretches of different directions.This utility model at longitudinal and transverse and vertically arranged different initial free stroke, thus can meet the requirement of various bridge type stroke free to all directions difference under normal use.

Description

Anisotropy drag-line stop

Technical field

This utility model belongs to civil engineering, earthquake engineering technical field, is specifically related to that a kind of to be applicable to bridge spacing Anisotropy drag-line stop.

Background technology

Repeatedly earthquake disaster investigation finds, bridge often falls the earthquake such as beam, collision under severe earthquake action, and this often draws Send out the interruption of disaster relief life line after shaking, thus bring the biggest difficulty to rescue timely.For this problem, scholars are it is proposed that each Plant pier beam stopping means, mainly have drag-line stop, steel pole stop, anticollision limited block etc..Wherein drag-line stop is main It is to use drag-line to be connected with pier by girder, prevents the generation of earthquake whereabouts beam；Steel pole stop is then by adjacent beam body steel pole Connect, so that beam body becomes an entirety under geological process；Limited block is then often placed into the two ends of bent cap, prevents the side of beam body To displacement.

These stopping means alleviate the earthquake such as beam, collision to a certain extent, but function singleness mostly, it is difficult to both accomplish Girder falling anticollision again；Meanwhile, can these traditional stopping means use method qualitatively to arrange mostly, when macroseism occurs Realize spacing, be suspectable；Not yet there is the stopping means that can realize different slack in three dimensions at present at bridge Apply on beam.

Summary of the invention

The purpose different in order to realize longitudinal and transverse and vertical slack, the purpose of this utility model be to provide a kind of respectively to Opposite sex drag-line stop, bridge can not only be carried out spacing from vertical, horizontal under geological process by this device, and can be effective Limit the rotation with in surface etc. of floorings.

A kind of anisotropy drag-line stop that the utility model proposes, including lower anchorage 1, lower shoe 2, drag-line 3, upper anchor Tool 4, slide plate 5 and upper plate 6, wherein: lower shoe 2 and the lattice plate that upper plate 6 is that steel plate is connected composition with floor of putting more energy into, Upper plate 6 and lower shoe 2 are positioned opposite, and the floor of putting more energy on upper plate 6 and lower shoe 2 is outwardly disposed；Upper plate 6 center has Slotted eye 8, the size of slotted eye 8 is common according to the diameter of required vertical, horizontal slippage and drag-line 3 under normal use Determine；Upper anchorage 4 is identical with the structure of lower anchorage 1, and lower anchorage 1 and lower shoe 2 is fixing to be connected, and on lower anchorage 1 and lower shoe 2 Floor of putting more energy into be positioned at homonymy, slide plate 5 is the steel disk greater diameter than the short axle of slotted eye 8, passes through polytetrafluoroethyl-ne bottom it Alkene plate is connected with upper plate 6, and slide plate 5 is positioned at homonymy with the floor of putting more energy on lower roof plate 6；Slide plate 5 top is fixed with anchorage 4, described drag-line 3 upper end is by pre-stretch-draw anchor on upper anchorage 4, and lower end is passed through and draw to be anchored on lower anchorage 1；Lower shoe 2 On the put more energy into height of floor determine according to the height of lower anchorage 1；The height of the floor of putting more energy on upper plate 6 according to slide plate 5 with upper The total height of anchorage 4 determines.

In this utility model, described lower shoe 2 and upper plate 6 are equipped with anchor bolt hole 7.

In this utility model, described upper anchorage 4 and lower anchorage 1 use small-sized prestress wire circle anchor.

Using method of the present utility model is: as anisotropy drag-line stop is placed on four angles of floorings, its The vertical floorings of major axis of middle slotted eye are horizontal.Normally use requirement according to bridge, determine effective major semiaxis of elliptical aperture Value (oval major semiaxis deducts drag-line radius) and effective semi-minor axis value (oval semi-minor axis deducts drag-line radius).Set up bridge FEM (finite element) model, constantly change the rigidity of drag-line, until the dynamic respond value under given earthquake motion is reduced to acceptable model Enclose, then drag-line rigidity now is multiplied by certain safety coefficient, as the design rigidity of drag-line.Then can show that required steel twists The area of line, then the actual (tube) length semiaxis of upper plate elliptical aperture i.e. can determine that with semi-minor axis.

The beneficial effects of the utility model are: this utility model can carry out the spacing of different directions, ground to multiple bridge type Shake backstay can be changed very easily, this device simple structure simultaneously, good reliability.

Accompanying drawing explanation

Fig. 1 be anisotropy drag-line stop face structural map.

Fig. 2 is the vertical view structural map of Fig. 1.

Fig. 3 is the lengthwise movement schematic diagram of floorings.

Fig. 4 is the transverse movement schematic diagram of floorings.

Fig. 5 is the rotary motion schematic diagram of bridge floor.

Label in figure: 1 is lower anchorage, 2 is lower shoe, and 3 is drag-line, and 4 is upper anchorage, and 5 is slide plate, and 6 is upper plate, and 7 are Anchor bolt hole, 8 is slotted eye, and 9 is drag-line horizontal route.

Detailed description of the invention

With embodiment, this utility model is further detailed below in conjunction with the accompanying drawings.

Embodiment 1: at Fig. 1, anisotropy drag-line stop in 2, by lower anchorage 1, lower shoe 2, drag-line 3, upper anchorage 4, slide plate 5, upper plate 6 form.Anchorage 1 is wherein played to use small-sized prestress wire circle anchor；Lower shoe 2 is for having circular bolt The lattice plate that the steel plate in hole 7 forms with floor of putting more energy into, wherein the height of floor determines according to the height of lower anchorage；Drag-line 3 For common deformed bar line, according to stress it needs to be determined that its cross-sectional area；Upper anchorage 4 is consistent with lower anchorage 1；Slide plate 5 is Greater diameter than the steel disk of the short axle of elliptical aperture, its bottom surface is pasted polyfluortetraethylene plate thick for 3mm and is reduced slide plate and Shang Ding Frictional force between plate；Upper plate 6 is the lattice plate of the steel plate having circular bolt holes 7 and stiffener composition, wherein upper top Plate center has slotted eye 8, and the height of stiffener is determined by the total height of slide plate 5 with upper anchorage 4, the size of slotted eye 8 Jointly determine according to the normal diameter using lower required vertical, horizontal slippage and drag-line.

Illustrate in conjunction with Fig. 3,4,5 pair anisotropy drag-line stop application on bridge.Fig. 3 is that floorings are vertical In time occurring to slide, the displacement state of many anisotropies drag-line stopping means；Wherein dotted line represent floorings do not occur slide time State, now drag-line 3 is positioned at the center of elliptical aperture 8, when there is longitudinally opposed motion in floorings opposing lower portions structure, and After relative displacement exceedes the effective major semiaxis value radius of drag-line (the elliptical aperture major semiaxis length deduct) of elliptical aperture 8, drag-line 3 starts to send out Waving effect, drag-line limits the further longitudinal sliding motion of floorings by its powerful rigidity.Fig. 4 is that floorings are laterally being slided Time dynamic, the displacement state of anisotropy drag-line stop, its spacing mechanism and vertical consistency.Fig. 5 is that floorings occur around wherein When the heart rotates, the displacement state of anisotropy drag-line stop, it is seen that now drag-line horizontal route 9 is an oblique line, say, that In the case of rotating, simultaneously can be with the generation of vertical, horizontal displacement, so working as vertical or horizontal displacement to exceed elliptical aperture 8 The effective semiaxis value radius of drag-line (elliptical aperture half axial length deduct) after, drag-line starts stress, thus limits entering of torsional displacement One step occurs.By Fig. 3,4,5 it can be seen that position actually located after cable movement is it likely puts initial point Which point that distance is the shortest.

Should be appreciated that in the range of without departing from this utility model, said apparatus and application examples can be carried out multiple changing Become, i.e. the hole shape of anisotropy drag-line stop can be changed, oblique curved bridge etc. can be applied it to many simultaneously Plant in bridge type.All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should wrap It is contained in protection domain of the present utility model.

Claims (3)

1. an anisotropy drag-line stop, including lower anchorage (1), lower shoe (2), drag-line (3), upper anchorage (4), slide plate And upper plate (6) (5), it is characterised in that: lower shoe (2) and upper plate (6) they are the lattice that steel plate is connected composition with floor of putting more energy into Formula plate, upper plate (6) and lower shoe (2) are positioned opposite, the floor cloth outwardly of putting more energy on upper plate (6) and lower shoe (2) Put；Upper plate (6) center has slotted eye (8), the size of slotted eye (8) according to normal use lower required longitudinal and transverse Diameter to slippage and drag-line (3) determines jointly；Upper anchorage (4) is identical with the structure of lower anchorage (1), lower anchorage (1) with under Base plate (2) is fixing to be connected, and lower anchorage (1) is positioned at homonymy with the floor of putting more energy on lower shoe (2), and slide plate (5) is that a diameter is big In the steel disk of slotted eye (8) short axle, be connected with upper plate (6) by polyfluortetraethylene plate bottom it, and slide plate (5) and under Floor of putting more energy on top board (6) is positioned at homonymy；Slide plate (5) top is fixed with anchorage (4), and described drag-line (3) upper end is by pre- Stretch-draw anchor is on upper anchorage (4), and lower end is passed through and draw to be anchored on lower anchorage (1)；Put more energy on lower shoe (2) height of floor Height according to lower anchorage (1) determines；The height of the floor of putting more energy on upper plate (6) is total according to slide plate (5) and upper anchorage (4) Highly determine.

Anisotropy drag-line stop the most according to claim 1, it is characterised in that described lower shoe (2) and upper plate (6) anchor bolt hole (7) it is equipped with on.

Anisotropy drag-line stop the most according to claim 1, it is characterised in that described upper anchorage (4) and lower anchorage (1) small-sized prestress wire circle anchor is used.