CN-121980281-A - Method for establishing road side guardrail protection grade system of off-road sightseeing vehicle

CN121980281ACN 121980281 ACN121980281 ACN 121980281ACN-121980281-A

Abstract

A method for establishing a road side guardrail protection grade system of an off-highway sightseeing vehicle relates to public transportation safety technology, establishes a collision energy calculation model based on actual parameters and limit operation conditions of the vehicle, and divides a protection grade accurately matched with the risk of the vehicle so as to effectively improve the operation safety level of the sightseeing vehicle. The method for establishing the protection grade system comprises the steps of collecting a large number of key technical parameters of the sightseeing vehicles in use in a target area, wherein the key technical parameters at least comprise rated passenger numbers, servicing quality and maximum running speed, carrying out statistical analysis on the collected servicing quality data of all vehicle types, determining a 90 th percentile value P90 serving as representative quality of the vehicle types, establishing a physical model for calculating collision energy of the sightseeing vehicles, and inputting the parameters comprising calculated quality, collision speed and collision angle, and establishing protection grades T1, T2, T3 and T4 of the guardrails of the off-highway sightseeing vehicles special for division according to the calculated collision energy range of the main vehicle types.

Inventors

LIU TONGWEN
LI ZHIXIONG
WANG CHAO
Zhu Liaoming
LI JUNYAN
LUO QILE

Assignees

广东省特种设备检测研究院肇庆检测院

Dates

Publication Date: 20260505
Application Date: 20251230

Claims (4)

1. The method for establishing the road side guardrail protection grade system of the sightseeing vehicle for the off-road is characterized by comprising the following steps of: Basic data acquisition and processing: Collecting a large number of key technical parameters of the sightseeing vehicle in the target area, wherein the key technical parameters at least comprise rated passenger number, servicing quality and maximum running speed; and (3) establishing a collision energy calculation model: Establishing a physical model for calculating collision energy of the sightseeing vehicle, wherein input parameters comprise calculated mass, collision speed and collision angle; calculating mass m and unit kg, adopting the preparation mass P90 value of each vehicle type, and superposing the product of the rated passenger carrying number and the specified average mass of 85 kg/person to be used as the collision total mass; The collision speed v and the unit m/s are used for calculating the collision speed by taking 150% of the maximum running speed of the sightseeing vehicle, wherein the collision speed of 6-23 sightseeing vehicles is 45km/h, and the collision speed of 24-72 sightseeing trains is 30km/h; the collision angle theta, unit degree, is set to 20 degrees; based on the above parameters, the calculation formula of the collision energy E is: ; dividing and selecting protection grades: Establishing and dividing special guard rail protection grades T1, T2, T3 and T4 of the off-highway sightseeing vehicle according to the calculated collision energy range of the main vehicle type; The two-dimensional decision matrix of the road side dangerous degree and the collision energy is calculated to form a query table for setting and selecting the protection level of the road side guard bar of the sightseeing vehicle:
2. The method for establishing a road side guard rail guard level system of an off-highway sightseeing vehicle according to claim 1, wherein guard rail structures of guard rail guard levels T1, T2, T3, T4 of the off-highway sightseeing vehicle correspond to the highway guard rail codes D, C, B, A, respectively.
3. The method for establishing the road side guardrail protection grade system of the off-highway sightseeing vehicle according to claim 1 or 2, wherein the collision speed of 6-23 sightseeing vehicles is 45km/h, and the collision speed of 24-72 sightseeing trains is 30km/h, based on the following two points: Simulating a runaway working condition, namely, the guardrail is used for coping with a runaway state of vehicle braking failure, and the speed is far beyond a specified speed limit; Compensating the downhill energy, namely, the potential energy conversion leads to the actual speed increase in the downhill road section of the scenic spot.
4. The method for building the protection grade system of the road side guardrail of the off-highway sightseeing vehicle according to claim 3, wherein the method is convenient for a user to refer to, and directly takes the corresponding seat number Q of the sightseeing vehicle as a substitute parameter, and the inquiry table for setting the road side guardrail of the sightseeing vehicle and selecting the protection grade is as follows:

Description

Method for establishing road side guardrail protection grade system of off-road sightseeing vehicle Technical Field The invention relates to the technical field of public transportation safety engineering, in particular to a method for establishing a road side guardrail protection grade system of a sightseeing vehicle (such as scenic spots, sightseeing vehicles in amusement parks and sightseeing trains) for off-highway. Background At present, with the vigorous development of the tourism industry, the off-highway tourism sightseeing vehicle becomes a characteristic transportation tool widely used in scenic spots, and the running safety of the off-highway tourism sightseeing vehicle is not only related to the life and property safety of tourists, but also becomes an important factor for influencing public safety and social stability. The TSG 81-2022 specifies the requirements of the sightseeing vehicles in tourist attractions, and particularly emphasizes that road segments with cliffs, deep valleys or water areas in the road edges 3m (4.5 m at bends) should be provided with road side guardrails matched with the protection capability of the vehicles, and meanwhile, the national market supervision administration 2025, 11 months, is mentioned again in the notification of the further strengthening of the safety supervision work of the special motor vehicles in the field (factory) by the office of the national market supervision administration (national supervision administration, no. 2025, no. 102), and protection facilities such as road side guardrails matched with the vehicles must be provided for the road side, temporary ditches and temporary waterway segments. However, in the off-highway environment, the special design of the road side guard rail is not perfect, and the defect is that only temporary protection facilities and landscape guard rails can be often arranged in engineering practice, or road guard rail standards are directly applied, so that obvious technical mismatch problems are generated, the obvious technical mismatch problems are mainly represented by misprotection energy mismatch, misprotection or insufficient buffering and other conditions are caused, and serious short plates of the road side safety protection are also exposed frequently in the case of sightseeing vehicle accidents in recent years. In addition, the inventor discovers that sightseeing vehicles have the characteristics of large span of rated passenger carrying number (6 to 72 seats), low running speed, obvious quality difference of preparation and the like, and have essential differences from common road vehicles in the aspect of collision dynamics. Therefore, under the background of requirements of safety technical regulations and related notices, constructing a road side guardrail protection grade system of the off-highway sightseeing vehicle, and effectively guaranteeing the sightseeing safety of people, and the method is a technical problem to be solved by those skilled in the art. Disclosure of Invention The invention aims to provide a method for establishing a road side guardrail protection grade system of an off-highway sightseeing vehicle, which is used for establishing a collision energy calculation model based on actual parameters and limit operation conditions of the vehicle, dividing the protection grade accurately matched with the risk of the vehicle, and simultaneously providing a clear setting principle so as to effectively improve the operation safety level of the sightseeing vehicle. In order to achieve the above purpose, the invention adopts the following technical scheme: The method for establishing the road side guardrail protection grade system of the sightseeing vehicle for off-road comprises the following steps: step S1, basic data acquisition and processing: Collecting a large number of key technical parameters of the sightseeing vehicles in the target area, wherein the key technical parameters at least comprise rated passenger number, preparation quality and maximum running speed, carrying out statistical analysis on the collected preparation quality data of each vehicle type, determining a 90 th percentile value P90 which is used as the representative quality of the vehicle type, covering most vehicles and considering the upper limit of the quality; S2, building a collision energy calculation model: Establishing a physical model for calculating collision energy of the sightseeing vehicle, wherein input parameters comprise calculated mass, collision speed and collision angle; Calculating mass m and unit kg, adopting the preparation mass P90 value of each vehicle type, and superposing the product of the rated passenger carrying number and the specified average mass of 85 kg/person to be used as the total collision mass, and considering the most adverse condition of full load; The collision speed v and the unit m/s are used for calculating the collision speed by taking 150% of the maximum running speed of