详情

原文传递 NCHRP Report 350 Test 3-11 on the Modified PennDOT Type 2 Guide Rail - Test 3

题名：	NCHRP Report 350 Test 3-11 on the Modified PennDOT Type 2 Guide Rail - Test 3
作者：	C. Eugene Buth, P.E., Wanda L. Menges, William F. Williams, P.E., and Sandra K. Schoeneman
关键词：	Guide Rail, Crash Testing, Roadside Safety
摘要：	The purpose of this project was to perform full-scale crash tests on a modified PennDOT Type 2 guide rail in accordance with National Cooperative Highway Research Program (NCHRP) Report 350 to evaluate performance of the guide rail at test level three (TL-.3). The rail was constructed in accordance with PennDOT standard drawings with modifications specified by PennDOT. For the first test performed under this contract (11/23/99), the W-beam rail elements were attached to the posts with 6 mm (0.25 in) diameter bolts threaded full length with a 6 mm round flat washer and two 44 mm square plate washers with 10 rom diameter hole used under the head and a 6 mm round flat washer and two nuts. Rail splices were located at mid-span between posts. Also, 14 mm (0.5 in) diameter by 40 mm (1.5 in) long shelf bolts were placed in the flange of the post and just below the W-beam with two nuts on the traffic face of the post to support the W-beam. During the first test, the rail element ruptured and the 2000P pickup truck penetrated the installation. For the installation used in the second test (1/6/00), the shelf bolts were eliminated on all but the last post near each end (the first post of the turned down). Back-up plates were added and the mounting bolt length was increased. The PennDOT Type 2 guide rail initially contained and redirected the 2000P pickup truck; however, as the vehicle continued along the guide rail, the rail dropped and allowed the vehicle to override the installation. For the installation used in the test reported herein, the installation was constructed similar to Test 2 with the following exceptions. The height of the rail was elevated to 820 mm (32.3 in) and 8 mm (0.3 in) diameter bolts threaded the full length with an 8 mm (0.3 in) round flat washer was used instead of the 6 mm (0.25 in) diameter bolts used in Test 2. In addition, 14 mm (0.55 in) diameter by 40 mm (1.5 in) long shelf bolts were placed in the flange of each post to support the W-beam rail. Details of the installation and results of this thin! full-scale crash test are presented herein. The PennDOT Type 2 guide rail contained and redirected the 2000P pickup truck.
报告类型：	科技报告