浅谈鞍钢新1号高炉炉衬结构

高炉炉衬结构包括本体内衬耐火材料、砌筑方式、炉衬冷却方式。合理的炉衬结构形式是高炉长寿的前提，本文着重介绍鞍钢新1号3200m^3高炉炉衬结构特点。     

延长锰硅合金矿热炉出铁口寿命的初步探讨

阐述了锰硅合金矿热炉出铁口损坏的机理。有针对性的采用了一些维护措施，延长了出铁口的使用寿命，改善了炉况，提高了产量，降低了生产成本，获得了一定的经济效益。     

砌体结构房屋底层墙体开洞时洞口最大宽度计算的探讨

本文根据国家现行规范和结构构件承载能力极限状态分析．提出了砌体结构房屋底层墙体开洞宽度的计算方法，供工程技术人员在工程实践中参考。     

Modeling Concrete Masonry Walls Subjected to Explosive Loads

Concrete masonry unit walls subjected to blast pressure were analyzed with the finite element method, with the goal of developing a computationally efficient and accurate model. Wall behavior can be grouped into three modes of failure, which correspond to three ranges of blast pressures. Computational results were compared to high-speed video images and debris velocities obtained from experimental data. A parametric analysis was conducted to determine the sensitivity of computed results to critical modeling values. It was found that the model has the ability to replicate experimental results with good agreement. However, it was also found that, without knowledge of actual material properties of the specific wall to be modeled, computational results are not reliable predictors of wall behavior.     

底吹二氧化碳对炼钢工艺及透气砖影响研究

基于CO_2与钢中元素的反应机理和化学效应,采用中频感应炉研究底吹不同比例CO_2对铁液中元素含量和底吹透气砖的影响,实验结果表明底吹CO_2不会堵塞底吹元件,底吹CO_2降低钢中氮含量,对氧含量无明显影响。     

砖砌体酥松脱皮的原因分析

以某中学宿舍楼出现砖砌体酥松脱皮现象为例,从多方面分析了出现这种现象的原因,指出在进行工程设计、施工及使用时应采取相应防治措施,从而提高工程质量,减少经济损失。     

预应力锚索在圬工桥台加固中的应用

针对小湖六桥病害情况,在分析病害成因的基础上,结合实践经验阐述了预应力锚索的加固技术,提出了相应的施工质量控制技术,实践证明预应力锚索在小湖六桥圬工桥台的应用是成功的,为桥梁病害治理提供实践经验。     

Failure of reinforced concrete and tuff stone masonry buildings as consequence of hydrogen pipeline explosions

Pipelines are the most efficient method of transporting large quantities of hydrogen, and the low volumetric energy density of gaseous hydrogen requires that the gas must be compressed to extremely high pressure to be used as a transport fuel. The failure of high pressure hydrogen gas pipelines and subsequent explosion may induce heavy damage to buildings. In this paper, such an issue is addressed for existing reinforced concrete framed buildings and tuff stone masonry buildings. Physical features such as the gas jet release process, flammable cloud size, blast generation and propagation, and explosion effects on structural components of buildings are considered and evaluated through the SLAB integral model, Multi-Energy Method and pressure‒impulse diagrams. Damage to both types of structural components was evaluated and the maximum distance of blast damage was derived in several environmental conditions, contributing to land-use planning and performance-based design/assessment of pipelines and buildings.     

泉州湾跨海大桥填海路基防护设计

根据工程所在地的特点,在填海路基迎水面采用干砌条石防护,并利用条石凹凸码砌的消浪机理,防止了海水的侵蚀,波浪爬高相当有限,并且在条石防护的基础上设置了压顶及护脚,增加了坡面防护的稳定性,取得了良好的防护效果。     

Numerical investigation of lateral earth pressure for unreinforced masonry walls

For the design of unreinforced masonry walls under lateral earth pressure according to DIN EN 1996‐3 [1], the active earth pressure is used, which is less than the earth pressure at rest. For the consideration of active earth pressure, a sufficient deflection of the wall is needed. It is unknown whether the deflections in reality are large enough to justify a reduction of the active earth pressure. Therefore a numerical model has been developed which considers the load‐bearing behaviour of masonry walls, with several boundary conditions being considered to estimate the effective earth pressure.