庆元编木拱梁廊桥的空间美学：一个地域文化的考察

浙江省西南山区的庆元县,虽然地处僻远,却拥有为数可观的编木拱梁廊桥,而成为当地重要的文化资产。综观这些廊桥,虽与邻近浙闽边区其它地域的廊桥共享了类似的营造方式,却在地域文化的影响下,具有了独特的空间美学样貌。事实上,俗称为“鹊窠桥”或“喜鹊窝桥”的庆元廊桥乃是庆元地域空间生产的中介（medium）与结果（product）,值得从“地域文化”（localculture）的角度进行深度考察。着眼于此,藉助人文地理学“地域性”（locality）之类学说,对庆元廊桥特有的社会文化意义、以及相应的空间美学作一初步的探究,不仅可为后续类似持续深入研究的参考,亦可作为浙闽有关县市形成合力以进行申遗之类行动的基础。     

苏通大桥主桥前期工程方案论证概述

围绕苏通大桥前期工程方案论证决策过程，重点介绍苏通大桥桥位论证、跨江大桥主桥工程方案研究与比选论证和有关前期科研工作概况。在跨江大桥主桥工程方案研究和比选论证过程中突出介绍了主桥桥型方案构思、1 088 m斜拉桥方案研究与比选、主桥结构体系研究与比选、主桥主要构件结构方案研究与比选，并从基础资料专题研究和桥梁关键技术研究两个方面介绍了苏通大桥前期科研工作概况。     

Assistant Pullback Technique for Main Span Closure of Sutong Bridge

Sutong Bridge is a cable-stayed steel box girder bridge with a main span of 1 088 m. The erection of upper structure adopts geometry control method and requires no change to the unit＇ s size and the structure＇ s none-stress geometry. Before main span closure, the cantilever of girder reaches 540.8 m, the structure state is noticeably influenced by extemal circumstances, the main span closure face great difficulty. By abstracting the advantage of the pullback method abroad and the domestic temperature-cutting method, a new assistant pullback method have put forward and bring into practice actually. In this paper, the analysis key point of practice conditions, key parameter of practice, main measures of the method and the performance is introduced.     

Discussion of the Prospective Danger of Earthquake Damage to the Xiamen-Jinmen District

It has been long discussed already about the characteristics of the recent earthquake of the Xiamen-Jinmen district. However,attention should be paid to that a large shock unexpected before such as the 1999 Chi-Chi earthquake in Taiwan west plain would take place in this area and its neighborhood, affecting the stability of the construction during the long duration after completion and usage of the future Xiaman-Jinmen Bridge. The probability of such case should be considered from studying the earthquake mechanism of the surrounding regions: The Taiwan Strait basin, Taiwan region (Taiwan island) and Fujian coastal region respectively. In this paper the features of earthquakes which occurred and will occur in any one of these three districts and then their influences on the construction of the future XiamenJinmen Bridge are described and discussed.     

大跨混凝土桥梁桥面线形控制中回归分析法的应用

以安稳大桥为例,采用回归分析法求解桥面铺装层曲线方程,对桥面线形及桥面铺装厚度进行控制,实践证明效果良好,为大跨度混凝土桥梁桥面线形的控制提供了新的思路。     

HLA桥接多联邦系统时间管理策略研究

能够运行于广域网的桥接多联邦可以重用已有的HLA仿真系统，快速构建大规模分布仿真环境，扩大仿真应用范围。介绍了RTI时间管理机制；分析了桥接多联邦系统两种时间推进方式：联邦发起方式与桥接转换部件发起方式，给出了相应的结论；针对桥接转换部件发起方式，提出了基于LBTS的桥接多联邦时间推进算法，对于算法中涉及的时间推进约束条件及推进过程进行了研究。     

大跨混凝土桥梁桥面线形控制中回归分析法的应用

以安稳大桥为例,采用回归分析法求解桥面铺装层曲线方程,对桥面线形及桥面铺装厚度进行控制,实践证明效果良好,为大跨度混凝土桥梁桥面线形的控制提供了新的思路。     

用电容式惠斯登电桥测直流电阻的方法研究

文章对电容式惠斯登电桥测未知直流电阻的方法进行了探讨，并且用两种方法测得了数据，所得的结果进行了误差分析．     

现代化城市桥梁抗震设计若干问题

简要讨论了现代化城市桥梁抗震设防所涉及的几个问题：即；桥梁震害的次生灾害；２．大跨度桥梁的抗震设计问题；３．城市架桥的抗震设计问题；４．城市梁抗震设计的设想。     

桥梁阵风风速系数研究

通过用短暂时距内的平均预期最大值代替瞬时预期最大值的方法来得到风速峰值和阵风风速系数,并讨论了地表粗糙度、基本风速、桥面高度和时距对阵风风速系数的影响程度,最后给出了阵风风速系数的数值．