Multiple Stress Creep Test Method for Asphalt Mortar Based on Different Driving Behavior Combinations at Road Intersections
A technology of asphalt mortar and testing method, which is applied in the direction of testing material strength by applying stable shear force, traffic control system of road vehicles, traffic flow detection, etc., and can solve the problem that the high temperature stability of asphalt mortar is weakly correlated and difficult to reflect the actual situation Asphalt pavement and other problems, the test results are stable and reliable, the test method is simple and easy, and the control of test conditions is reasonable.
Active Publication Date: 2021-04-30
淮安市博彦土木工程科学研究院有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to solve the weak correlation between the test method for the high temperature stability of road intersection asphalt mortar and the actual road conditions in the prior art, it is difficult to reflect the actual situation and provide accurate data support for the asphalt pavement design of road intersections To provide a multiple stress creep test method for asphalt mortar based on the combination of different driving behaviors at road intersections
Method used
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Embodiment 1
[0038] Select a representative main road in a certain city for research, and the speed limit is 60km / h.
[0039] Such as figure 1 As shown, a multiple stress creep test method of asphalt mortar based on different driving behavior combinations at road intersections includes the following steps:
[0040] Step 1: Obtain the traffic information of the road intersection to be tested, the traffic information includes the speed of the passing vehicle, the distance between the vehicles and the traffic volume;
[0041] When counting traffic volume, different vehicle types need to be converted into standard vehicles according to Table 3; the traffic composition information of an intersection section is counted as shown in Table 4, including vehicle speed, traffic volume and distance between vehicles.
[0042] Table 3 Standard Vehicle Conversion Factors
[0043] car model car Passenger, truck Buses, buses, trucks conversion factor 1.0 1.6 2.0
[0044] Tabl...
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Abstract
The invention discloses a method for testing the multiple stress creep of asphalt mortar based on the combination of different driving behaviors at road intersections. Step 2: Determine the category, weight and loading mode of driving behavior; Step 3: Calculate the length of the loading cycle for different driving behaviors in the test; Step 4: Conduct multiple stress creep tests of asphalt mortar. The method of the present invention fully considers the force characteristics of asphalt mortar in actual road intersections, and uses the vehicle speed and headway distance data of actual road intersections to deduce the indoor loading modes corresponding to different driving behaviors, and the combination of different driving behaviors can accurately By simulating the high-temperature creep characteristics of asphalt mortar under multiple stress creep tests, the test method of the invention is simple and easy, the control of test conditions is reasonable, and the test results are stable and reliable.
Description
technical field [0001] The invention specifically relates to a multi-stress creep test method of asphalt mortar based on different driving behavior combinations at road intersections, and belongs to the technical field of road engineering. Background technique [0002] At present, although there are many studies on asphalt pavement rutting at home and abroad, most of them focus on the test conditions, material composition, load characteristics, environmental factors, etc., and the special evaluation and prevention research on the serious condition of road rutting at road intersections is in Not many. At present, the commonly used indoor test methods for evaluating the high-temperature stability of asphalt pavement include dynamic stability test, dynamic creep test, Hamburg rutting test, etc., but these test methods have a single loading mode and cannot characterize the special load characteristics of road intersections, including vehicle speed Low, vehicle acceleration and ...
Claims
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IPC IPC(8): G01N3/24G08G1/01G08G1/015G08G1/052G08G1/065
CPCG01N3/24G01N2203/0025G01N2203/0071G01N2203/0226G01N2203/0266G01N2203/0298G08G1/0125G08G1/015G08G1/052G08G1/065
Inventor 陈星宇蒋继望陈胜陈辉祁红梅鸽福王荭杰
Owner 淮安市博彦土木工程科学研究院有限公司