摘  要：分析了PCCP的计算原理和计算步骤，利用PCCP所依据的ANSI/AWWA标准中的计算方法和基本公式，在系统整理和理解国内外相关计算规范的基础上，采用VC＋＋6.0为开发工具，开发出了符合中国设计规范、材料参数及设计习惯的软件，使其能在工程设计人员的设计过程中起到重要的辅助作用。

摘  要：为解决当前碾压混凝土压实厚度只能在30cm左右的限制，加快碾压混凝土施工速度，采用新型的垂直振动碾和密度检测仪进行不同摊铺厚度(27cm、41cm、54cm)、碾压层厚(54cm、82cm、108cm)的碾压工艺试验，取得的密度数据表明，碾压合适的遍数、压实后厚度为30～60cm的混凝土，其压实度可满足质量要求。三种新型的密度检测仪(最大测深度100cm)能满足30cm以上厚层碾压混凝土在施工过程中的检测要求。Abstract:TobreakthroughtherestrictionsofthethicknessofthecurrentRCCcompactionabout30cm,andtoacceleratethespeedofrollercompactedconcreteconstruction,newtypesofverticalvibrationofrolleranddetectorsofdensityareusedfortheRCCprocesstestsofdifferentthicknesspaver(27cm,41cm,54cm)androllercompactedthickness(54cm,82cm,108cm).Thedensitydatasobtainedshowthattheappropriatetimesofrollingandthepost-compactionthicknessof30～60cmofconcrete,itsdegreeofcompactioncansatisfythequalityrequirements,andthreenewdetectorsofdensity(maximummeasureddepthof100cm)canmeetthetestingrequirementsofmorethan30cmthicklayerofrollercompactedconcreteintheconstructionprocess.

摘 要：介绍了硅酸钙板生产线专用升降平台的设计计算、结构尺寸设计对其驱动力的影响，分析了设计步骤、设计要点与应用情况。 Abstract：The design calculation of special lifting platform for calcium silicate board production line and the influences of structural dimension design on its drive force are introduced. Design steps, design key points and application situation are analyzed.

摘 要：提出了一种新的板材结构优化设计方法，并运用这一方法优化了复合外墙板的结构参数，分析了面层材料和芯层材料的性能对优化结果的影响。 Abstract: An optimized design method of new slab structure is offered. By applying this method, the structural parameters of composite exterior wall slab are optimized, and the influence of properties of the surface layer and core layer materials on the optimized result is analyzed.

摘 要：根据实际工程构件中钢筋锈蚀的不均匀性，设计了14根钢筋混凝土梁，并进行了试验梁在两对称集中荷载作用下的抗剪性能试验。通过对不同特征试验梁的裂缝分布、破坏模式和极限承载力的对比分析，研究了一侧剪跨内不同长度局部区段内不同的锈蚀特征对梁受力性能和承载力的影响。结果表明，一侧剪跨局部区段无粘结梁、锈蚀梁的力学性能与正常梁有很大的区别：因局部区段内的完全无粘结，局部区段无粘结梁在无粘结一侧的剪跨区内无斜裂缝，梁可能发生粘结完好一侧的剪切破坏，也可能发生弯曲破坏。对局部区段锈蚀梁，虽然所有的试件均因剪跨内的锈蚀区段而破坏，但随着锈蚀区段长度的增长和其内钢筋锈蚀率的增加，梁呈现出较脆的破坏模式和较低的极限承载力。 Abstract: According to inhomogeneity of component steel corrosion in practical engineering, 14 RC beams are designed, and under the roles of symmetrical concentrated loading, shear properties tests of testing beams are conducted. Through crack distinctions, contrastive analysis of damage modes and limited capacity of different characteristic testing beams, the influences of different corrosion characteristic of the partial section with different lengths in one side shear span on beams mechanical properties and bearing capacity are researched. The results indicate that mechanical properties beteween unbonded or corroded beams of the partial section in one side shear span and normal beams have a lot of differences: because of completely unbonded in partial section, unbonded beams of the partial section in unbonded side shear span have no diagonal cracks, therefore, beams may happen shear damage in good bonded side or will happen bending damage. For the corroded beams in partial section, all samples are destroyed because of corrosion section in shear span, however, by the length of corrosion section increasing and steel corrosion rate inside increasing, fragile damage modes and low limited capacity of beams are presented.

摘  要：对比分析了两种规格的玄武岩纤维分别以0.05%、0.10%、0.15%的体积掺量对机场道面混凝土抗折、抗压强度性能的影响规律。试验结果表明，玄武岩纤维对机场道面混凝土有较好的力学增强性能，28d抗折强度提高6.09%～19.80%，对抗压强度影响不明显，并且长度40mm、直径40μm的短切玄武岩纤维较长度20mm、直径20μm有更好的增强效果，可以在机场混凝土道面施工中使用，其最佳体积掺量为0.10%。Abstract：Theeffectsoftwokindsofbasaltfiberwith0.05%,0.10%,0.15%volumedosageontheflexuralstrengthandcompressivestrengthofairportpavementconcreteareanalyzedandcompared.Testresultsindicatethatbasaltfiberforairportpavementconcretehasgoodenhancingmechanicalproperty.Byincreasing6.09%～19.80%flexuralstrengthin28d,basaltfiberdonothaveobviouseffectsoncompressivestrength.Short-cutbasaltfiberwithlength40mm，diameter40μmhasbettereffectsonmechanicalpropertiesthanbasaltfiberwithlength20mm，diameter20μm,whichcanbeusedinairportconcretepavement,anditsoptimumvolumedosageis0.10%.