本文介绍了预应力箱梁的吊装施工技术。
This paper introduces the construction technique for hoisting prestressed concete box girder.
主要针对预应力箱梁在预制过程中所须的内模，在结构形式、使用原理等方面进行了研究。
This article mainly aims at the internal mold used in the process of prefabricating box-girder and conducts researches on it's structural style, activity principle and so on.
波形钢腹板作为一种新型的结构用于体外预应力箱梁中，必须对这种组合结构的各个关键部分进行详细的研究。
The corrugated webs are new structures which be used in external prestressed Bridges. To research the key ports of the structures is obligatory.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast - in - place segmental prestressed concrete box girder.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast-in-place segmental prestressed concrete box girder.
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.
主跨加劲梁为钢箱梁，边跨加劲梁为预应力混凝土箱梁。
The stiffening beams of the side spans are prestressed concrete box beams.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast - in - place segmental prestressed concrete box girder .
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.
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,.
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.
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.
用有限元法和能量变分法对预应力活性粉末混凝土简支箱梁的剪力滞效应进行研究。
The shear-lag effect on the prestressed RPC simply-supported box girder is studied by FEA method and energy variation method.
再次，讨论了预应力、混凝土徐变、箱梁抗弯刚度等对桥梁结构下挠的影响。
Thirdly, pretressing, concrete creep and bending rigidity of box girder are studied to discuss their impacts on the deformation of girder.
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.
预应力混凝土箱梁以其优良的截面性质在梁桥中占据了主要地位。
With its excellent section characters, the prestressed concrete box beam plays a main role in the girder bridge.
对混凝土箱梁腹板竖向预应力进行研究。
The vertical prestress applied to webs of concrete box girder is studied.
介绍了预应力混凝土箱梁施工中存在的问题，提出了自己的见解及相应的措施。
Some problems existing in the construction of prestressed concrete box beam are introduced, and some views and measures are put forward in the paper.
计算结果验证了预应力混凝土箱形连续梁桥中出现斜裂缝的原因推测。
Results prove that presumption of the causes of diagonal cracks in continual box-gird with pre-stressed concrete bridge is correct.
在此基础上，对五跨预应力组合箱梁进行了研究，从可靠度方面给出了在服役期间结构的可靠度水平。
Based on that, a five-span prestressed composite box girder is studied, the reliability level of construction is computed in the different service period from reliability.
空间有限元分析表明，预应力混凝土箱梁的应力和变形对温度梯度模式的变化较为敏感。
The space finite element analysis indicated that the prestressed concrete box girder's stress and the distortion are sensitive to the change of gradient of temperature pattern.
结合工程实例，介绍大跨度预应力现浇箱梁托架法施工的关键工序、质量检测及控制。
An introduction is given to key construction flow, quality detection and quality control of bracket method for large span prestressed cantilever box beam cast in place.
并介绍了箱梁混凝土的浇注工艺及预应力施工的方法。
Concreting technology for the box girders and construction method for the prestressing system are dealt with as well.
在正常使用状态下，预应力平抑了箱梁剪力滞效应。
Shear lag is reduced for prestress in serviceability limit state .
研究目的：研究顶板横向预应力钢束对箱梁横向计算结果的影响，给箱梁结构设计提供借鉴和帮助。
Research purposes: This paper analyzes the effect of the lateral prestressing tendon in top deck on the lateral calculation result of box beam.
简要介绍武汉白沙洲大桥主桥上部结构的钢箱梁、高强螺栓、预应力混凝土箱梁、斜拉索的施工工艺和质量控制措施。
Construction technology and quality control measures for steel box girder, high-strength bolt, prestressed concrete box girder and inclined cable are briefly introduced.
根据预应力简支钢箱梁的受力特性，考虑预应力索与钢箱梁的相互作用，建立了有限元计算模型，有限元计算值与实测值吻合较好。
According to the mechanical character of simply supported steel box girder with prestressed tendons, and considering the interaction of tendons and girder, the finite element model is established.
根据预应力简支钢箱梁的受力特性，考虑预应力索与钢箱梁的相互作用，建立了有限元计算模型，有限元计算值与实测值吻合较好。
According to the mechanical character of simply supported steel box girder with prestressed tendons, and considering the interaction of tendons and girder, the finite element model is established.
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