浅谈预应力混凝土连续箱粱腹板病害及加固方法

主要阐述了目前预应力混凝土连续箱梁在多年的运营中,箱梁腹板的主要病害及其加固方法。     

Test of extensively damaged hybrid ship hull

A hybrid ship hull model made with a steel truss and composite sandwich panels was tested and analyzed with the goal of gaining insight into how well this structural concept holds up after major damage. One of the ideas of the concept was to mount the sandwich panels to the steel truss such that they can be blown out in a controlled fashion to ventilate a large internal blast. The hull should be designed to have sufficient strength for the ship to reach a port safely even after such extensive damage. A 6-m model of such a hybrid ship hull, consisting of a stainless steel truss and 60 composite sandwich panels, was manufactured and mechanically tested. A number of panels were then removed one by one and the hull was retested to the design load after each panel had been removed. The removed panels simulated major damage. After nine panels had been removed, from all the different areas of the hull, it could still carry the design load, although with considerable nonreversible deformations of the hull girder. The hull was eventually loaded to final failure, which occurred at 25% above the design load.     

汽车门内饰板间隙面差研究

门内饰板是汽车内饰中重要组成部分,对舒适性有很高的要求。门内饰板间隙和面差对门内饰板外部美观和感知质量起着至关重要的作用,反映了门内饰板的设计和工艺水平。文章主要论述门内饰板的间隙面差研究方法,分析门内饰板内部以及门内饰板和周围环境件的间隙面差,总结了门内饰板间隙面差设置方法和要点,用于设置合理的间隙面差,提高了门内饰板的感知质量和舒适性。     

车轮与轮胎设计间隙研究

本文以解决某款新车型正向设计轮罩在车辆在综合耐久路试过程中出现了前轮胎和轮罩干涉的现象对轮胎与轮罩间隙设计的因素进行研究分析,增加了新的轮胎包络工况明确了轮胎和轮罩的预留间隙值。