Abstract: Ultra thin friction course is a gap-graded asphalt mixtures, which thickness ranges normally from 20mm to 25mm. This surfacing course can improve the performances of old asphalt surface with lower cost. Ultra thin friction course can be used as a new pavement surface maintenance material for high-grade road.

Keywords: Asphalt surface; Ultra thin friction course; Gap-grading; Application

（上海浦东公路养护建设有限公司¹，同济大学道路与交通工程教育部重点实验室）

摘要：骨架密实型水泥稳定碎石能够提高基层强度，改善基层裂缝。介绍了骨架密实型水泥稳定碎石混合料配合比设计的基本思想、方法及步骤。并且从现场的角度，对水泥稳定碎石混合料的施工工艺要点进行了阐述，并对采用该级配的作为基层的试验路段进行检测评估。

关键词：水泥稳定碎石；骨架密实；配合比设计；施工工艺；检测

Design and Construction Process of Skeleton-dense Cement Stabilized Macadam Base

Abstract: skeleton-dense cement stabilized macadam have high strength but low shrinkage cracks. This paper introduced its basic concept and mix ratio design method. The key points of its construction process is stated according to field practice. At last, The testing road further indicates that asphalt pavement on this type of base has better structural and service performance.

Key words: cement stabilized macadam, dense skeleton type, mix ratio design, construction process, Inspection

摘要：由于水泥混凝土路面自身的特点及其路面施工及设计方面的缺陷，在行车和自然因素的作用下，路面不可避免地会出现各种病害，而水泥混凝土路面修复困难，修补工作量较大且影响使用。现今在旧水泥混凝土面层上加铺沥青混凝土层，是改善其使用性能和提高其承载能力的一项常用措施。这里结合闵行区实际情况，具体分析水泥混凝土路面加罩过程中极易产生的问题—反射裂缝，提出解决措施。

Research on Anti-reflective Crack of Overlaying Asphalt Layer on CCP in Minhang District

Abstract: As a result of the own characteristics, the limitation of design and construction, the cement concrete pavement (CCP) inevitably distressed by traffic loading and environmental factors. The maintenance of CCP is difficult and costly, even it effects the traffic. Nowadays, overlaying asphalt layer is a common measurement to improve its service performance and bearing capacity. Combing the actual situations of Minhang District, the paper puts forward the solution method for reflective crack which is the most easily occurred problems in overlaying pavement.

摘要：回顾了彩色沥青路面的发展历史并简要分析了彩色沥青路面的功能与作用，着重论述了常用的热拌彩色沥青混凝土路面设计与施工的技术关键，同时介绍了彩色沥青稀浆封层、超薄彩色环氧沥青罩面、彩色沥青胶接料造粒、人工染色石料等彩色沥青路面铺装新技术和新材料。

关键词：彩色沥青路面；彩色沥青混凝土；设计与施工；综述

Abstract：The simplified review of colour asphalt pavement and its function have been taken in this paper. The key technology for design and construction of colour hot mix asphalt pavement are discussed in detail. The new technology and materials for colour asphalt pavement such as colour slurry-sealing, colour ultrathin epoxy asphalt overlay, artificial colour aggregates are also introduced.

Key words: Colour asphalt pavement; Colour hot mix asphalt; Design and construction; Summary

摘要：通过对路面的力学计算，分析了路床处理的必要性；过湿土含水量大，碾压后难以达到压实度要求，对几种处理过湿土处理方式进行了比较，对工程实际中路基处理有一定的参考意义。

Abstract：Through mechanical analysis, this paper made out the necessity of roadbed treatment in overwet soil. Super-wet soil can^’t meet the requirement of compaction because of excessive moisture content. Several treating methods of overwet soil are compared，which is valuable for subgrade construction。

摘要：针对我国高速公路多采用半刚性基层沥青路面结构，国外多为柔性基层结构，提出复合式基层结构。通过引进国外长寿命路面设计理念，提出新型长寿命沥青路面结构的力学设计指标；运用正交试验方法，设计了正交表L₃₂(4⁹)，通过极差分析得出影响力学设计指标的最不利因素，提出路面结构的最优组合。

关键词：复合式基层；长寿命沥青路面；力学指标；正交试验

Orthogonal Analysis on Mechanical Indexes of New-Type Perpetual Asphalt Pavement

Abstract：Semi-rigid base pavement structure is commonly used for freeway in China, while flexible base is used abroad. The composite base was suggested in the paper. Base on the design concept for perpetual pavement abroad, mechanical design indexes for new-type perpetual asphalt pavement structure were proposed. An orthogonal array L₃₂(4⁹) was designed by orthogonal test method. The most unfavorable factors affecting mechanical design indexes are presented, and the optimal combination of pavement structure are concluded through range analysis.

Key words：composite base；perpetual asphalt pavement；mechanical indexes；orthogonal test

新颖自锚式悬索桥设计与转体施工

王凤霞

（上海兰德公路工程咨询设计有限公司）

摘要：新颖自锚式悬索桥的主缆采用钢管混凝土索套的半刚性索；加劲梁采用预应力混凝土箱梁，主缆作为预应力体外索，在跨中正弯矩区段穿入箱梁内，托起箱梁并起主缆中央扣的作用，形成梁索组合结构。桥梁的恒载由主缆承担，预应力混凝土箱梁承担主缆索力的水平分力，箱梁用于减少自锚式悬索桥的活载作用下的挠度，并承担压力与弯矩。这类桥梁建筑高度约为～，它适用于跨径100m左右的二跨或三跨连续梁桥。施工方法过去一般采取满堂支架现浇，因此限制了本桥型的适用范围。在上海松江施贤路油墩港桥，将偏心转体施工方法首次应用于自锚式悬索桥，并利用盆式支座为转体的磨心及滑道，缩小了主桥跨径及省略钢筋混凝土磨心的精工细作，施工工艺简便易行，使上述桥型可适用于不同场合。

关键词：自锚式悬索桥；体外索；转体施工；盆式支座

Design and swing Construction Technique for new self-anchored suspension bridge

WANG Feng-xia

Abstract: A new kind of self-anchored suspension bridge is designed in the paper. Its main cable is made of half-rigid rope which is surrounded by the concrete steel tube; The prestress concrete box girders are used as stiffened girder;The cables are anchored both in the end and in the middle of the main girder where is in the region of positive bending moments, so the main cables are used as prestressed external cables to form girder-rope combined structure. The dead load is supported by main cables, and the horizontal force of the main cable and moment are supported by the prestress concrete box girders. The using of box girders can reduce deformation of live loads.This kind of bridge’s building height is l/40~l/50, and is suitable for 2- span or 3-span 100m continuous beam bridge. Traditional rafting cast- in- situ support restricts the application of this kind of bridge. During the constructing of Youdunxiang Bridge, the swinging technique is firstly applied to self-anchored suspension bridge’s construction. In addition, basin support is used as the spherical surface and slipway, which reduces the span and avoids difficulty of RC spherical surface. The technique is simple and easy which promotes the application of the new kind self-anchored suspension bridge.

Key words: self-anchored suspension bridge, external tendon, swinging construction, basin support

摘要：通过计算分析，揭示了新规范温度应力作用对预应力混凝土连续梁配束的影响，并就如何配置钢束几何形状，以降低预应力二次力矩的不利影响作了分析。

The several experience of the strands layout about the equal three-span prestressed concrete continuous beam

Abstract: By calculating and analyzing, the effects of the thermal stress of new specification on the strands layout of prestressed concrete continuous beam is revealed. The analysis on how to arrange the geometrical shape of the strands to reduce disadvantageous influence of the second moment of the prestress is made too.

宁波大榭大桥预应力连续T型梁桥橡胶支座损伤原因探讨及建议

摘要：大榭大桥T梁桥板式橡胶支座在通车5年后出现了早期的损伤，针对损伤现象，分析探讨了主要原因：支座选型、形状系数、支座设计应力与疲劳强度储备、反扰度等因素，并提出了后续维修更换的技术建议。

Reasons and suggestions on plate-type rubber bearings damage of the Ningbo Da-xie prestressed continuous T-shape beam bridge

Abstract: The early damage in plate-type rubber bearings of the Daxie Bridge has shown up after the bridge is put into service for 5 years. In view of the damage phenomenon, this paper has analyzed the main reasons: the choice of rubber bearing, the shape factor, the designed stree of bearing, the fatigue strength reserve, the anti-jamming degrees and so on. The technical proposal of follow-up repairing and replacement is made.

（中交第一公路勘察设计研究院¹；东南大学ITS工程研究中心²）

摘要：钢桥面铺装荷载图式是钢桥面铺装力学分析的基础。利用三维有限元方法对265/70R19.5（11.00R20）轮胎与正交异性钢桥面铺装的接触过程进行了模拟，计算出了轮胎与铺装接触的平面分布以及接触区域内应力的分布特性。研究结果表明：轮胎与铺装接触区域的平面形状以及接触区域垂直应力分布等都随着汽车荷载的变化而变化；当汽车轴载超过100kN时，轮胎与铺装接触区域的平面形状近似为矩形；当轮胎作用于正交异性钢桥面U形加劲肋腹板顶面时，轮胎与铺装层接触区域的垂直应力横向分布接近于“凸”形，当轮胎作用域正交异性钢桥面板U加劲肋腹板之间时，接触区域的垂直应力横向分布接近于马鞍形。在钢桥面铺装力学分析时选用双矩形荷载能够较好的模拟轮胎与铺装接触平面的实际状况，而轮胎荷载的横向分布应该综合考虑轮胎作用最不利位置之后决定。

Abstract：Loading pattern is the basis of mechanical analysis of steel deck pavement. In this paper, 3-D FEM was used to simulate the contact process between tire (265/70R19.5) and deck pavement. The characteristic of contact area and stress distribution was studied. The results show that the contact area and stress between tire and pavement vary with the vehicle axle loading. When axle loading reaches 100kN, the contour of contact area is approximately rectangle; and when the tire is above the web of U stiffeners, the distribution of uprightness stress in the contact area is near peak type, and when the tire is on the pavement between webs of stiffeners, the distribution of uprightness stress is near concave type. Therefore, double rectangles loading pattern can simulate the contact between tire and pavement better than others, and the loading density should be chosen after the unfavorable position of the tire is considered properly.

摘要：中小型钢筋混凝土桥梁，由于结构简单、跨径较小，且地处郊区，其安全运行易被大家忽视，一旦病害处理不及时极有可能继续扩大导致桥梁坍塌，影响交通和行车安全，因此必须采取科学合理的养护管理措施，确保桥梁安全受控。结合多年桥梁养护经验，对钢筋混凝土中小型桥梁的安全运行养护管理提出了一些自己的见解，供广大桥梁养护工作者参考。

Discussion on the maintenance management of the safety operation of small and medium-size reinforced concrete bridge

Abstract：The safety operation of small and medium-size reinforced concrete bridge is easy to be neglected because of its simple structure, smaller span, and the position at the suburb. The road pavement disease shall be maintained timely, otherwise the situation may worsen and lead to cave in which may influence the transportation and traffic safety. In order to guarantee the bridge safety under control, the reasonable measure to maintain and manage the bridge shall be adopted. Based on years of working experiences of the bridge maintenance, the autor puts forward some suggestions on the maintenance management of small and medium-size reinforced concrete bridge.

摘要：通过金汇港上桥梁的例行检查，深入了解桥梁建造的历史背景，进行现状分析，对发现问题的探讨及对策。

Abstract: By the routine inspection of the bridges in Jin Hui Port, the bridge construction history is made clear and the current situation is demonstrated. After the analysis of diseases, the maintenance measures are put forward.

Key words: Bridges; Safety; Routine inspection; Ribbed arch bridge; channel simply supported beam

摘要：总结了地震作用下钢筋混凝土桥梁主要构件的理论易损性曲线的建立方法及其基本步骤，并且应该考虑到地面运动、本地土壤条件以及桥梁本身参数等不确定性。进一步说明如何考虑桥梁主要易损构件如桥墩、支座和桥台等对整个桥梁体系易损性的影响，并且利用概率工具从单个构件的易损性直接预计桥梁体系的易损性，表明桥梁作为一个体系比任何一个单独的构件更易损。

Abstract: An analytical method and it’s procedures to obtain analytical fragility curves of the major components of reinforced concrete bridges in earthquake is generalized considering uncertainties of seismic ground motion, local site condition and parameters of the bridge itself. What's more, the contribution of the major components of the bridge, such as the columns, bearings and abutments, to its overall bridge system fragility is considered and probability tools is utilized to directly estimate the bridge system fragility from the individual component fragilities. This study shows that the bridge as a system is more fragile than any one of the individual components.

高速公路运营安全管理程序与方法

摘要：从实时与自然环境下公路运营安全性入手，分析了人、车、路、环境对公路运营安全的影响，探讨了公路运营安全管理的构成以及程序、功能与作用，并用实例对灾害性天气下高速公路安全管理系统的应用加以说明。

关键词：运营安全；管理系统；信息采集；决策支持；信息发布

Procedure and Method of Freeway Operating Safety Management

Abstract: Based on freeway operating safety under real time and environments, this paper analyzed the influence of human, vehicle, road and environments on freeway operating safety, furthermore discussed the Composition, process, function and action. The safety management system under disaster weather conditions was developed and applied into the Shanghai-Nanjing expressway.

Key words：operating safety ；management system；information collection；decision；issuance

摘要：讨论了城市环射道路系统和城市发展的关系；针对多层环路系统中外围高速公路收费问题，解释了其经济学合理性，分析了弹性收费与交通量的关系；最后介绍了以调节流量和还贷为目的成都收费外环高速的改善方案。

Abstract The paper discusses the relationship between ring-radiation road network and urban land utilization and urban development. Aiming at the issue of toll outer ring-freeway in multi-ring road system, it explains the rationality of tolling in economics, analyzes the relationship between elastic toll rate and traffic demand. Finally, Chengdu outer ring is set as an example to introduce the improving schemes of toll-ring-freeway for the purpose of traffic demand-adjusting and paying back loan.

（同济大学土木工程学院¹；上海同济杨浦科技创业园有限公司²）

摘要: 通过2006年国内高速公路建设工程保险保额最大的项目—渝湘线高速公路重庆段，结合我国道路工程的投资、建设现状，分析了道路工程建设过程中的相关风险因素，讨论了道路工程的风险与工程保险在其中发挥的作用和意义。

Discuss risk and insurance of road engineering from the largest insurance slip in China

WANG Xu- feng SHI Li- qiong

abstract: This paper is based on Chongking-Hunan highway project (Chongking part), which has the largest insurance slip in China. Combined with the current situation of investment and construction of highway in China, this paper analyses related risk factors during road construction period, and also discussed function and significance of project insurance in road construction.
keywords: road engineering; project insurance; risk management

摘要：公路养护机械化是一个系统工程，必须从公路养护作业的全局出发制定养护机械配置方案，经济性、合理性等适度的目标是科学决策的主要依据。

Abstract: The mechanization of road maintenance is a systematic engineering. The configuration scheme should consider the all-around factors of road maintenance. The target of economic, rationality is the main principle to make the decision.

Key words: mechanization of road maintenance, Configuration Principle , Make-decision program, scheme application

（上海浦东工程建设管理有限公司¹ 上海浦东建筑设计研究院有限公司²）

摘要：在老路利用改建工程中，一般对原路面采取弯沉测试和钻芯取样等方法进行检测。而采用公路地质雷达检测技术，可以弥补现有检测手段的不足，有利于更全面地掌握老路面、路基的状况，更好地指导道路的改造。

Application of GPR Detection Technology in the Road Reconstruction Engineering

Abstract: In the reconstruction of the old road, it generally use the deflection measurement and pavement coring to access the old pavement performance. Ground Penetrating Radar (GPR) technology can remedy the defect of the above methods. The application of GPR is beneficial for engineer to master the condition of the old pavement and roadbed and then to direct the reconstruction process of the old road.

Key words: road reconstruction, ground penetrating radar, pavement/roadbed detection, deflection measurement