CN201010869Y

CN201010869Y - Anti-stumble energy-absorbing highway guardrail upright post

Info

Publication number: CN201010869Y
Application number: CNU200720143493XU
Authority: CN
Inventors: 周炜; 王维; 蔡凤田; 李大鹏; 乔希永
Original assignee: Research Institute of Highway Ministry of Transport
Current assignee: Research Institute of Highway Ministry of Transport
Priority date: 2007-04-09
Filing date: 2007-04-09
Publication date: 2008-01-23
Anticipated expiration: 2017-04-09

Abstract

The utility model relates to a stumble proof energy absorbing vertical pillar of road barrier, which mainly comprises a pillar body, and the pillar are a columnar steel material. Upper part of the pillar is an upper pillar body(3) while the lower part of the pillar is a lower pillar body(1) and a S shaped bend neck(2) is arranged in between; the upper pillar body, the bend neck and the lower pillar body are connected as a whole and a fixing blot(4) is arranged on the upper pillar; the length of the vertical center line of the upper and the lower pillars is 10 to 100cm; the structure of the S shaped bend neck is that the included angle of common tangent of the upper arc line circular(2.1) and lower arc line circular(2.2) and the level is 10 to 50 degrees. The utility model which is suitable for arranging of road and bridge railing has reasonable structure, favorable stumble proof performance, strong energy absorbing capability and favorable safety performance.

Description

The anti-resistance energy-absorbing highway guard rail upright post of stumbling

Technical field

The utility model belongs to a kind of highway communication facility, and concrete is to be used for the guardrails of both sides of various highways, bridge and the column of central partition guardrail, in order to ensure highway communication operation and safety.

Background technology

The guardrail of highway and bridge is the key facility that ensures traffic safety, in automobile and highway barrier collision accident, guardrail not only has interception, guide effect, and good cushion energy absorbing property and pilot's line of vision inducing function also will be arranged, and plays enormous function to improving highway traffic safety.In vehicle and the rail collision process, guardrail board, obstruction block, column and ground are done as a whole, resist the impact of vehicle jointly, and absorb the energy of most of automobile impacting by distortion separately; Its central post is the pith of energy-absorbing in the guard bar structure.According to analysis of experiments and theoretical calculating, the energy that column absorbs accounts for guardrail total endergonic 43.91%.In barrier propterty research, find that there be " effect is mixed in resistance " in the automobile impacting guardrail, and the deformation process of the generation of " resistance is stumbled " and column is closely related to traditional guardrail.The distortion of vehicle and guardrail knockout process central post mainly contains lateral displacement and two stages of buckling, when wheel is exercised stud, if because the bump column is positioned at the wheel inboard, along with rushing in forward of vehicle, wheel under the effect of column gradually outside partially, column can block wheel when wheel is biased to certain angle.Meanwhile vehicle produces strong rotation around column under huge inertia force effect, and afterbody is away from guardrail, and the front portion is surrounded by breast board and makes breast board produce bigger torsional deformation, even tears.This resistance effect of stumbling is totally unfavorable to the safety of vehicle, can cause the wheel of vehicle to separate with vehicle body, make steering ineffective, make vehicle body moment deceleration, and make some weak parts destruction that deforms, and strengthen passenger's damage, cause vehicle horizontal in road central authorities, obstruction, even cause new traffic accident.

Present column form mainly contains O type seamless steel pipe column, H type standard i shaped steel column, and some other variant.The column of these structures, though can both play to a certain degree safety guarantee effect, its derive poor performance, buffering energy-absorbing less, prevent and reduce the resistance effect aspect of stumbling that bigger deficiency is arranged.Therefore, need to propose a kind of structure of improving, deter stumble effect and the better highway guard rail upright post of security performance.

The utility model content

The purpose of this utility model is at the problems referred to above, proposes a kind of anti-resistance energy-absorbing highway guard rail upright post of stumbling.This column is provided with curved neck, and is rational in infrastructure, has better to deter stumble effect and security performance.

The purpose of this utility model is achieved through the following technical solutions: the anti-resistance energy-absorbing highway guard rail upright post of stumbling, mainly comprise cylinder, it is characterized in that: described cylinder is cylindricality steel, top is last cylinder, the bottom is a lower prop, the centre is provided with the curved neck of a S shape, cylinder this on, bends neck and lower prop in conjunction with as a whole, is provided with set bolt on the cylinder on described.

The utility model further improves and the additional project of enforcement is: the described horizontal range that goes up cylinder and lower prop vertical center line is 10-100cm.The structure of the curved neck of described S shape is: the common tangent line and the horizontal angle of the circle of the last camber line of the curved neck center line of S shape and the circle of following camber line are the 10-50 degree.

The utility model is owing to be provided with the curved neck of S shape, it is outstanding in the middle of the road to go up cylinder during installation, side space is bigger under the feasible breast board that suspends, when automobile and guardrail bump, wheel has very big rotary space in the place ahead of column, thereby avoid being stumbled by the column resistance, the order of severity of reduction accident greatly reduces causality loss.The setting of the curved neck of S shape makes column by collision the time, not only can longitudinal strain, laterally rotation, thereby bigger elasticity and cushion effect are arranged, also make the vehicle operating track relatively slicker and more sly, the energy of more vehicle impact be can absorb, thereby security performance, the loss of minimizing accident improved.The utlity model has rational in infrastructurely, stressed evenly the energy-absorbing anti-impact force is strong, anti-resistance effect and the good advantage of security performance of stumbling.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structure key diagram of the curved neck of S shape of the present utility model;

Fig. 3 is a user mode lateral view of the present utility model;

Fig. 4 is a user mode vertical view of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described further: embodiment 1: referring to accompanying drawing, the anti-resistance energy-absorbing highway guard rail upright post of stumbling, mainly comprise cylinder, described cylinder is a circular GB Φ 114mm steel pipe, top is last cylinder 3, and the bottom is a lower prop 1, and the centre is provided with the curved neck 2 of a S shape, should go up cylinder, curved neck and lower prop in conjunction with as a whole, be provided with set bolt 4 on the cylinder on described.The described horizontal range that goes up cylinder and lower prop vertical center line is 30cm.The structure of the curved neck of described S shape is: the common tangent line 2.3 of the circle 2.1 of the last camber line of the curved neck center line of S shape and the circle 2.2 of following camber line is 20 degree with the angle of horizon 2.4.Described set bolt is a high-strength bolt.

Embodiment 2: the anti-resistance energy-absorbing highway guard rail upright post of stumbling, and described cylinder is an i iron, and the horizontal range of last cylinder and lower prop vertical center line is 80cm, and the common tangent line of the circle of the last camber line of the curved neck center line of S shape and the circle of following camber line and horizontal angle are 40 degree.Other structures are identical with embodiment 1.

The anti-resistance energy-absorbing highway guard rail upright post of stumbling of the present utility model, the setting of part on the ground and guardrail board, obstruction block, and column and ground fixed form still adopt traditional standard [People's Republic of China's industry standard " expressway traffic safety facilities relates to construction technique normalizing (JTJ074-94) "].Present embodiment adopts double wave breast board 5, and column is that high-strength bolt is connected with the type of attachment of obstruction block 6, guardrail board; General column has three kinds of fixed forms with the ground relation of plane: column adopts pile driver to drive piles, column is fixed in the concrete foundation, column is connected with the concrete foundation segmented.Wherein, the segmented connection is that whole column design is become 2 segmentations: top, ground and the part of imbedding in the ground.Two sections connection can select flange to connect, and also can use additional sleeve to connect.Embodiment 1 adopts sleeve to connect, and this connected mode can be substituted column, is highly suitable in the concrete foundation.Use the plastic pipe preformed hole in the concrete, consider that the change length of embedment that column will be high from now on can change in 400～800mm.The bearing device is fixed in the concrete foundation, and the screw with urgent device during installation unclamps, and inserts two sections columns, adjusts height, and the column that tights a bolt is then promptly locked.

Claims

1. anti-stumbling hindered the energy-absorbing highway guard rail upright post, mainly comprise cylinder, it is characterized in that: described cylinder is cylindricality steel, top is last cylinder (3), the bottom is lower prop (1), the centre is provided with the curved neck (2) of a S shape, cylinder this on, bends neck and lower prop in conjunction with as a whole, is provided with set bolt (4) on the cylinder on described.

2. fence upright according to claim 1 is characterized in that: the described horizontal range that goes up cylinder and lower prop vertical center line (3.1,1.1) is 10-100cm.

3. fence upright according to claim 1 is characterized in that: the structure of the curved neck of described S shape is: the common tangent line (2.3) of the circle (2.1) of the last camber line of the curved neck center line of S shape and the circle (2.2) of following camber line is the 5-50 degree with the angle of horizon (2.4).