计算了对称和不对称加载的无粘结预应力连续梁的应力增量。
The stress increments of unbonded prestressed tendon in the continuous beams subjected to both symmetrical and asymmetrical loads are analyzed.
重点讨论了预应力连续梁中次弯矩和轴向预压力对弯矩调幅的影响。
The emphasis of the paper is placed on the influence of the secondary moment and the axial prestress on the moment redistribution.
根据二次预应力连续梁的施工过程，提出了施工阶段的应力和变形分析方法。
For the construction process of twice prestressed continuous beam, the stress analysis and deformation analysis method during construction stage is provided in this paper.
本合同段控制性关键工程是预应力砼连续组合箱梁的施工。
The controlled crucial works for this contract section is the construction for the prestressed concrete continuous combined box beam.
另外，在预应力连续桥梁的使用过程中，发现箱梁开裂的现象相当严重。
Otherwise, in using the continuous girder bridge we can find that the craze of the box-beam is very popular.
研究目的：预应力混凝土连续梁采用满布支架施工时，常常因为现场浇注的混凝土量过大，而不得不分段进行施工。
Research purposes: the segmental casting method is often used in the full framing construction of prestressed concrete continuous girder because concrete casting in-site is too much.
本文叙述了悬臂拼装预应力混凝土连续梁的预加力引起的弯矩重分布。
In this paper the moment redistribution due to prestressing in precast segment continuous prestressed concrete beam erected by cantilever method is described.
本文对三跨预应力连续箱梁桥的边跨与中跨比例问题进行了初步的探讨。
The paper discussed proportion between side span and middle span in three spans prestressed continuous box beam bridge.
预应力混凝土连续箱梁桥的开裂可以说是“多发病”，影响着构件的外观、使用寿命，甚至结构安全。
Cracking is quite common in prestressed concrete continuous box girder bridge, which influences appearance of component, life span of using, and even safety of structure,.
从而将灰色系统理论成功应用到大跨度预应力砼连续梁桥的施工控制中。
Then the gray system theory is applied in the construction control of long-span prestressed concrete continuous beam bridge.
预应力设计是混凝土连续梁桥设计中的重要组成部分。
The prestress design is the important part in the design of concrete continuous girder bridges.
挂篮是目前大跨径预应力混凝土连续刚构桥和连续梁桥在悬臂浇注施工时主要采用的施工设备。
The hanging baskets are the main equipments in the cantilever casting construction of large-scale prestressed concrete continuous rigid bridge and continuous girder bridge.
预应力混凝土连续箱梁与钢混结合梁在公路、铁路工程中的应用越来越普及。
Prestressed concrete continuous box girder and steel-concrete composite girder are more and more adopted in construction of highway and railway.
大跨度预应力砼连续梁桥施工过程中体系转换复杂，横向刚度控制是施工的关键之一。
The system transition in the construction of long span prestressed concrete bridge is very complex, and the control of the lateral stiffness is one of the key techniques.
针对布筋方式不同的预应力钢筋混凝土连续梁结构，采用力法分别求解其预加次内力。
Several types prestressing armoured concrete continuous beams are analysed. Hypo-internal force are separately calculated by introducing mechanics way.
针对某大跨度连续刚构桥出现的主要病害及其原因，介绍了采取增设预应力混凝土箱梁体外索的加固措施。
Aiming at the main damage and its causes of a large-span continuous rigid framework bridge, the strengthening measure of adding the external cable to prestressed concrete box girder was introduced.
关于预应力结构的内力重分布研究很多是关于连续梁结构的，对预应力框架的研究相对较少。
Most of the research on moment redistribution is based on continuous beam structures, a little on prestressed concrete frames.
本文介绍了预应力先简支后连续梁桥的施工方法，施工工艺，质量保证措施，施工过程中的注意要点以及体系转换问题。
This paper also introduced the construction method, construction technic, quality control measure and the construction key of the structure system change of the simple-continuous beam bridge.
预应力混凝土连续箱梁的悬臂施工作为大跨径桥梁的主要建设方式日渐成熟，但此类桥梁设计、施工中仍然存在着某些关键问题其处理方式比较含糊。
Now cantilever construction of prestressed concrete continuous box girder as the chief construct methord in engineering has gone intio the rang of mature.
预应力混凝土连续曲线箱梁桥应用日益广泛，已经成为现代交通基础设施的重要桥型。
It is the wide application of P. C. continuous curved box-girder bridge which has become an important bridge style in the transportation infrastructure.
经由以上原则以及设计施工等诸多方面考虑后，确定预应力混凝土连续梁桥为最终设计方案。
Accdoding to the above principles and construction factors, the prestressed conous bridge is chosen to the ultimate.
滨州黄河大桥引桥是预应力混凝土连续梁桥，采用C50高性能混凝土。
The approach Bridges of Binzhou Huanghe River bridge are of prestressed concrete continuous girder structures used with C50 high performance concrete.
预应力混凝土连续梁和连续刚构桥是目前桥梁工程中应用最广泛的桥型，通常采用平衡悬臂方法施工。
Pre-stressed concrete continuous beam and continuous concrete rigid frame bridge, constructed through balanced cantilever, are the widest used in recent Bridges.
介绍大跨度不对称曲线预应力混凝土连续梁桥的设计和成桥后的静、动载试验。
In this paper, the design of the long span asymmetric prestressed concrete curved continuous girder bridge, and static and dynamic load tests for the completed bridge are described.
采用三维实体单元和杆单元相结合的空间组合有限元方法，对一座两跨曲线预应力混凝土箱形连续梁桥进行空间受力分析。
Using a spatial composite finite element method, combining three-dimensional solid element and bar element, the mechanical analysis of a two-span curved PC continuous box girder bridge is conducted.
重点对预应力混凝土连续梁桥使用过程中存在的主要问题、形成原因以及设计对策等方面进行了初步分析和论述。
Emphasis is laid on the problems caused during the service of such Bridges, and initial analysis is made of the causes and countermeasures in the design.
目前，关于预应力混凝土连续梁、连续刚构的理论研究较为深入，从设计理论上讲已日趋成熟，施工经验也较丰富。
At present, the theoretics of continuous Bridges and continuous rigid-frame Bridges have been researched deeply, design theoretics has matured and the experience of construction has been abundant.
最后介绍了预应力混凝土连续曲线箱梁桥的设计，重点讨论了总体设计，钢束预应力的损失的计算，预设支座偏心调整扭矩等设计中的关键问题。
Lastly design of P. C. continuous curved girder bridge is discussed in the paper, in especial prestress reinforcing steel bar's loss and bearing design.
最后介绍了预应力混凝土连续曲线箱梁桥的设计，重点讨论了总体设计，钢束预应力的损失的计算，预设支座偏心调整扭矩等设计中的关键问题。
Lastly design of P. C. continuous curved girder bridge is discussed in the paper, in especial prestress reinforcing steel bar's loss and bearing design.
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