预压施工在沿海滩涂地区地基加固中的应用

介绍真空预压、真空联合堆载预压以及堆载预压技术在天津港南疆港区滩涂地质地基加固中的应用.     

真空-堆载联合预压法实例分析

真空联合堆载预压是在真空预压、堆载预压理论和应用研究的基础上发展起来的一种软基加固方法,通过近些年来的发展,真空联合堆载预压在围海造陆软基处理工程应用中取得了良好的效果.     

真空-堆载联合预压在变电站软基处理中的应用

介绍了真空-堆载联合预压的加固机理,结合工程实例,对真空-堆载联合预压的加固效果进行探讨与分析。     

真空-堆载联合预压技术在青岛滨海公路软基处理中的应用

介绍了真空-堆载联合预压技术原理及其在青岛滨海公路软基处理中的施工工艺。根据监测数据和原位测试结果,分析了软基沉降、水平位移、孔隙水压力等的变化规律。通过对加固前后土体的力学性质的对比分析,说明了真空-堆载预压技术在滨海公路中的应用是成功的。     

软基堆载预压及真空预压固结设计方法的研究

本文首先探讨了堆载预压及真空预压的加固机理并作了两者的比较，综合讨论了真空联合堆载预压法的基本原理、加固特点。同时介绍了一些工程应用实例，具体分析了真空联合堆载预压法的应用效果。     

真空联合堆载预压法处理软土地基

主要探讨了真空联合堆载预压法在高速公路软土地基处理中的应用,简要说明了真空联合堆载预压法的基本概念及其加固机理,并介绍了真空联合堆载预压的设计、施工工艺及检测。     

堆载预压和真空堆载联合预压的比较

堆载预压和真空联合堆载预压都是工程中处理软土地基的常用方法。通过舟山富通电缆项目地基处理工程项目中堆载预压和真空联合堆载预压施工的比较研究,得出真空联合堆载预压比堆载预压具有更高的施工成效效率,更好的沉降稳定性和沉降性,以及水平位移量更小,使周围软弱边界的变形处于较为稳定的状态。     

真空堆载联合预压技术在高速公路软基处理中的应用

本文结合工程实例,分析了高速公路采用真空-堆载联合预压技术进行加固处理的设计方案,并结合施工工艺流程,对真空-堆载联合预压施工技术、施工监测与处理效果分析进行了详细阐述和总结。     

真空—堆载联合预压在上海高速公路的应用

真空—堆载联合预压是高速公路软基处理技术。以上海沪青平高速公路为例,通过5个实验段,介绍了真空预压阶段、真空—堆载阶段和联合预压阶段等3个阶段中断面沉降情况。实践证明,该技术提高高速公路软基沉降速率较快,远远超过堆载规划值10mm/d;具有真空预压和堆载预压双重效果,既速度快又不至于失稳;加固深度较大,减少工后沉降;施工管理和质量检验简单易行。因此,该技术施工工艺成熟,可推广应用。最后指出了有待深化完善之处。     

真空联合堆载预压加固吹填软基工艺探讨

真空联合堆载预压软基加固技术作为软基处理的一种新技术,具有加固效果好、施工工期短、经济效益明显等优点。结合某沿海城市一新区真空联合堆载预压处理吹填陆域软基的工程实例,对真空联合堆载预压施工工艺进行了探讨。     

Tragfähigkeit von Spannbeton‐Fertigdecken auf biegeweichen Auflagern

Load bearing Capacity of Prestressed Hollow Core Slabs on Flexible Support Precast prestressed concrete hollow core slabs, the design and application of which are regulated in Germany by a general technical approval, are produced in production lines with a length of approximately 100 meters. In the longitudinal direction they are reinforced with tendons, in the transverse direction no vertical or horizontal reinforcement is arranged. If the width of the slabs is limited to 1.20 meters no transverse reinforcement is required. While the transverse load distribution is guidelined in the approval, the shear resistance of flexible supported slabs in connexion with a possible crack initiation due to the forced displacements is not regulated until now. In order to determine the actual failure mechanisms and the influence on the bearing capacity, a full scale test was carried out at the Kaiserslautern University of Technology by the Institute of Concrete Structures and Structural Design.     

Changes in point and diffuse source phosphorus inputs to the River Frome (Dorset, UK) from 1966 to 2006

Changes in the relationship between soluble reactive phosphorus (SRP) concentration and river flow between 1966 and 2006 were assessed for the River Frome, UK using the recently developed Load Apportionment Model. The resulting source load estimates gave good agreement with known changes within the catchment. The model indicated an increase in point source contribution to the total river load from 46% to 62% between 1970 and 1985. This corresponded with the population increase within the catchment during that time. The predicted mean SRP load was highest between 1996 and 2000 (30 t y^− 1), with 49% coming from point sources. Despite no lowering in population or major changes in agricultural practice, the model predicted a reduced load of 18.1 t y^− 1 for the period 2001 to 2005, due mainly to a decrease in point source inputs from 14.6 t y^− 1 to 6.1 t y^− 1 (equivalent to 34% of the total load). This prediction matches the major improvements in sewage treatment that occurred within the catchment in 2002. This study thus provides a major validation of the Load Apportionment Model. The model provides an effective and rapid method of determining past changes in phosphorus sources, based entirely on the P concentration - flow relationship: critically, it does not require any historical information on land use, fertiliser application rates, topography, soil types and sewage inputs. Further decreases in SRP concentration in the River Frome during the algal growing season would be best achieved by further reductions of STW inputs.     

Anpassungsfaktoren für das Lastmodell 1 des DIN‐Fachberichtes 101 für gewichtsbeschränkt beschilderte Straßenbrücken

Correction Factors for the Load Model 1 according to the DIN‐Fachbericht 101 for Weight constricted signposted Road Bridges Since 2003 the DIN‐Fachbericht 101 is the normative basis for the design loads of bridges in Germany. In contrast to the previous code of practice, the DIN 1072, the DIN‐Fachbericht does not include details about bridges, which will be signed with traffic weight limitations. This paper describes the development of reduction factors for the Load Model 1 in the DIN‐Fachbericht and presents the new calculated factors. Therefore the DIN‐Fachbericht Load Model 1 has been extended for the application of traffic weight limitations signed bridges.     

间歇式加强带在高层建筑施工中的应用

通过对青岛数码科技中心工程间歇式加强带施工工艺的分析,提出了用间歇式加强带应用于超长高层建筑施工中,以解决超长混凝土结构施工缝的构造及施工技术问题.通过间歇式加强带在本工程中的应用,很好地解决了工程的进度和质量问题.     

数字城市建设中单体建筑物三维模型的实现

介绍了CSG/B-rep混合模型的基本情况，以太原理工大学办公楼为例，利用OpenGL在VC 下建立模型，绘制和显示了三维图形，指出该混合建模手段的采用，对数字城市的建设具有重要的意义。     

Fate of hormones and pharmaceuticals during combined anaerobic treatment and nitrogen removal by partial nitritation-anammox in vacuum collected black water

Vacuum collected black (toilet) water contains hormones and pharmaceuticals in relatively high concentrations (μg/L to mg/L range) and separate specific treatment has the potential of minimizing their discharge to surface waters. In this study, the fate of estrogens (natural and synthetical hormones) and pharmaceuticals (paracetamol, metoprolol, propranolol, cetirizine, doxycycline, tetracycline, ciprofloxacin, trimethoprim, carbamazepine, ibuprofen and diclofenac) in the anaerobic treatment of vacuum collected black water followed by nitrogen removal by partial nitritation-anammox was investigated. A new analytical method was developed to detect the presence of several compounds in the complex matrix of concentrated black water. Detected concentrations in black water ranged from 1.1 μg/L for carbamazepine to >1000 μg/L for paracetamol. Anaerobic treatment was only suitable to remove the majority of paracetamol (>90%). Metoprolol was partly removed (67%) during aerobic treatment. Deconjugation could have affected the removal efficiency of ibuprofen as concentrations even increased during anaerobic treatment and only after the anammox treatment 77% of ibuprofen was removed. The presence of persistent micro-pollutants (diclofenac, carbamazepine and cetirizine), which are not susceptible for biodegradation, makes the application of advanced physical and chemical treatment unavoidable.     

真空排水预压在公路软基加固中的应用

分析真空排水预压技术对软土地基加固机理,介绍该技术在武汉地区的施工应用效果,对其施工影响因素及其在武汉地区的发展前景进行探讨。     

强夯法加固地基的三维有限元动力分析

在强夯法加固地基的分析中,首次提出了采用单位脉冲荷载法来解决动力接触问题,并编制了三维有限元程序进行动力计算.经与实际工程资料对比,计算结果比较令人满意.     

满足新时代大学生科研需求的关键平台:创新研修课

中美两国本科教学有着较大的区别。与美国相比，中国管理制的教学体制有利于督促学生学习，充足的课程让学生理论功底更扎实。但中国本科教学往往强调知识内容本身，而较少关注理论的实践运用，重知识传授，轻能力培养，以致学生实践能力不足。当代大学生科研热情日益高涨，越来越多的本科生期望参与科研。哈尔滨工业大学以科研优势为依托，设立"创新研修课"，受到学生欢迎。实践证明，"创新研修课"不仅为年轻教师提供了科研助手，更为本科生搭建了通往研究生继续深造的过渡桥梁。"创新研修课"已成为本科生发表SCI学术论文的创新平台，为本科生打开了参与国际交流的一扇窗。     

静载试验维持荷载法的完善与改进

针对传统的静载荷试验维持荷载法,探讨进一步完善与改进的若干措施,以提高静载荷试验过程的可靠性。