工地焊接制造厚钢板梁

福州市闽江二桥拓宽工程上部为４０ｍｍ和３２ｍｍ厚钢板组成的钢板梁，由工地现场焊接制造。本文针对工地特下的施工条件，着重围绕控制焊接角变形这个主要问题，阐述了保证闽江二桥钢梁制造提前而又优质完成的一些技术措施。     

沈阳市富民桥斜塔施工新技术

沈阳市富民桥主桥为双塔独柱式单索面预应力混凝土斜拉桥,是我国第一座折线形斜塔斜拉桥,介绍其主塔的施工方法及新工艺.     

基于Kohonen神经网络的多传感器多目标跟踪方法

本文描述了一个Ｎ维Ｋｏｈｏｎｅｎ神经网络和算法,提出了多传感器多目标跟踪（ＭＳＭＴＴ）的Ｋｏｈｏｎｅｎ神经网络方法,认真研究表明该方法的有效性,可提高目标跟踪的速度和精度。     

Numerical analysis on the influence of thickness of liquefiable soil on seismic response of underground structure

Seismic response of underground structure in liquefiable soils was analyzed by means of fully coupled dynamic finite element method. The soils were simulated by a cyclic mobility constitutive model, which is developed at the base of modified Cam-Clay model with some concepts such as stress induced anisotropy, over-consolidation and structure. It is verified that the constitutive model can perfectly described the dynamic character of both liquefiable sand and non-liquefiable clay. Special emphasis was given for the influence of thickness of liquefiable soil on the seismic response. Results showed that soils at both sides of the structure flowed toward the bottom of the underground structure with the occurrence of liquefaction, which led to the uplift of structure. The uplift of underground structure increased with the increasing of thickness of liquefiable soils.     

Distribution Laws of Fire Temperature Fields in Immersed Tunnel: A Case Study of Hong Kong Zhuhai Macao Bridge Immersed Tunnel Project（沉管隧道火灾温度场分布规律研究——以港珠澳大桥沉管隧道为例）

The large testing platform for immersed tunnel is established to analyze the distribution laws of the temperature field and its influencing factors when a tunnel fire breaks out. Meanwhile, the combination method of physical testing (1∶1 full scale fire test) and numerical calculation FDS are applied. Some conclusions are drawn as follows: (1) Longitudinal wind speed within limits can decrease the maximum temperature of tunnel crown top effectively when fire breaks out in tunnel. (2) The maximum temperature of tunnel crown top and fire behavior are related to fire types obviously. (3) The high temperature resistance safe position of the tunnel equipment is below 3.5 m of tunnel sidewall in case of fire source heat quantity of 50 MW. (4) The fire maximum temperature is positively related to heat release rate (HRR) and longitudinal wind speed.     

General Design of Shenzhen Zhongshan River crossing Link Project（深圳至中山跨江通道工程总体设计）

Shenzhen Zhongshan River crossing Link is the first super integrated project in the world that consists of four different types of structures, i.e. ultra long and wide immersed tunnels, super large span sea crossing bridges, deep water artificial islands and undersea interchanges. The river crossing is designed for two way and 8 lane as per highway technical standards. Based on project characteristics and its technical difficulties, engineering solutions and the associated technology innovations have been listed as follows: (1) Proposed a design concept of standardization, industrialization, intelligence and project integration, and completed the study of overall design of Shenzhen Zhongshan River Crossing Link. An immersed tunnel with a combined steel shell and concrete composite structure is designed and the width of tunnel elements is from 46 to 55.5 m; Lingdingyang Bridge has been designed as a suspension bridge with a 1 666 m main span and two 270 m high main bridge towers. For West Island, a temporary enclosure caisson structure made of ultra large steel cylinders with a diameter of 28 m is designed to achieve a rapid artificial island formation. (2) Summarized the design and construction solutions related to combined steel shell and concrete structural immersed tunnel, the mix design, batching and concrete casting methods of high strength self compacting fluidized concrete, concrete quality check and inspection, design and construction of deep cement mixed (DCM) pile foundation for immersed tunnels, design and construction of large scale undersea dimensional transport interchange, flutter and wind stability design for super large span suspension bridge with monobox girders, and key techniques related to design and construction of offshore anchorage in deep sea. Furthermore, an equipment is developed and innovated for not only transport, also for installation of immersed tunnel elements to ensure the implementation of the project in an effective and economical way.     

会计电算化立体化教学包的开发及应用

文章介绍了会计电算化立体化教学包及其开发的意义，阐述其构建目标和内容体系，并对教学包中关键部件的应用方法给予了说明。     

反压法在边坡滑塌抢险中的应用——以重庆某失稳边坡抢险治理为例

边坡滑移失稳后适时有效的抢险措施可以消除安全隐患,减小工程损失。本文以重庆某边坡事故为背景,通过对边坡滑塌失稳原因和潜在破坏模式的分析,进行方案论证,选取填方压脚方案对边坡进行抢险治理。通过对治理方案边坡整体稳定性和回填层岩土内部稳定性的分析,论证该方案的可行性。实践证明,填方压脚对该边坡事故抢险行之有效,为同类工程事故处理提供了有益的借鉴。     

基于综合相似度的地铁施工风险应急推理研究

针对地铁项目施工环境复杂、不可预见因素多、施工事故频发、难以对其进行快速有效的应急决策与救援的问题,首先,搜集以往地铁施工应急案例,分析地铁施工风险因素,运用Protégé软件建立知识本体模型;然后,计算本体库中源案例与目标案例的综合相似度,从案例库中匹配出综合相似度最大的源案例,通过对比本体库中与目标案例相似度最高源案例的关键属性,运用规则推理对相似案例的应急措施进行适用性修改,从而提高应急措施的针对性,为快速有效地应对地铁施工事故进行应急决策提供新的方法;最后,以某地铁项目施工为例,验证了该相似度算法的合理性。