Experimental study on stability of sunken large diameter cylindrical structure on sandy seabed during construction period

A systematic experimental research work is done for the stability of sunken large diameter cylinder during construction period. It is the first research that gives the method for assessing the stability of the larger diameter cylindrical structure, a set of values is derived also for the critical stability indices of the large diameter cylinder sunken to the sandy seabed.

Penalty model for delay of bidding section construction period in South-to-North Water Diversion Eastern Route Project from perspective of programs

According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculation of penalty for delay of the bidding section construction period with the critical path method, we studied the effects of contractor-induced delay of the bidding section construction period in detail, including the effects on the construction period of the bidding section itself, the earliest start times of the next bidding section and other subsequent bidding sections, and the construction period of the program, and then constructed a penalty model for delay of the bidding section construction period from the perspective of programs. Using the penalty model, we conducted a practical analysis of penalty for delay of the construction period of the Baoying station program in the South-to-North Water Diversion Project. The model can help determine the amount of penalty for delay of the construction period in bidding sections scientifically and reasonably,

Small Town Construction in the 13th Five-Year Plan Period: A Case Study of Shangrao City

The 12 th Five-Year Plan period was unusual five years in the development of China. Under the dual pressure of complex international environment and arduous domestic reform task,China made outstanding achievements in economic development,which lays a solid foundation for building a moderately prosperous society in all respects in the 13 th Five-Year Plan period. The key and difficult points of building a moderately prosperous society in all respects lie in solving issues concerning agriculture,farmers,and rural areas. The 18 th National Congress of the CPC stated that integrated urban and rural development is the fundamental approach for solving issues concerning agriculture,farmers,and rural areas. As a transitional form from rural areas to urban areas,small town play an important role in integrated urban and rural development. In the 13 th Five-Year Plan period,China should take a new road of characteristic urbanization,energetically develop key towns,central towns,and characteristic towns,use points to drive areas,and promote coordinated progress of urbanization construction and new countryside construction. Focusing on the objective of building a moderately prosperous society in all respects and taking Shangrao City as an example,we analyzed construction of small town,in order to provide scientific theoretical reference for urbanization development,plan preparation,and policy formulation of Shangrao City.

Target for Power Construction in 9th Five-year Plan Period Set-up

According to the National Meeting on Power Construction and Cost Control held in Beijing on 26th August 1996, the target for power construction in the period of 9th Five- year Plan is set-up as follows:

Trial Demonstration of SupervisionDuring the Quality Guaranteed Period in Construction of Power Plant

The Supervision during construction of Thailand PTA Co-generation, Which was contracted by our country extended into the quality guaranteed period. The supervision during the quality guaranteed period includes the monitor of the operation and maintenance of power plant,organization of subcontractor to treat the problems and defects occurred in the field in time, technical consultancy and communication in time, delivery of spare parts, and assistance of clearing Contractor’s quality deposit. It is proved by the practice that it is necessary to early out the supervision during quality guaranteed period.

Reconstruction and Restoration of Main Facade and Wooden Ceilings of Hasan Basha Tahir Kuttab &Sabil, Cairo—Egypt

The architectural?complexes?of Hasan Basha Tahir?were suffering from many damages and deformation in different elements as load bearing walls, arches and wooden ceiling. Ground water, salt weathering, air pollution, biological colonization and environmental aspects were the main degradation factors which caused a lot of damage and deterioration phenomena in the complexes. Horizontal and vertical cracks, salts, loss of decorations, and featured dark of the stone surface were noticed at the complexes elements. In addition, the celling of the complex was in a very bad condition;?it had lost a lot of decoration elements, cracking, soot deposition, insects’ holes, and fungi growth. This research will discuss the various deterioration phenomena that?have?effect on the main building materials and cause the damages and discuss the general scientific methodology of the architectural and structural conservation project which was?carried out.

COIF:Focus on Posat-pandemic Period and Constructing A New Development Paradigm

On November 25,the 12th China Overseas Investment Fair(COIF)was held by the China Overseas Development Association in Beijing.Officials and representative from embassies or offices in China from 85 different countries,including the ambassadors from 31 countries,attended this year’s event.The COIF was held with the theme entitled“Concentrating on the post-pandemic era and constructing a new development paradigm”,and focused on how to build platforms and create business opportunities to lift the world economy out of recession.

Risk Assessment and Prediction of Construction Project Based on 1D-CNN-Attention-BP

In order to solve the problem of low accuracy of construction project duration prediction, this paper proposes a CNN attention BP combination model project risk prediction model based on attention mechanism, one-dimensional convolutional neural network (1d-cnn) and BP neural network. Firstly, the literature analysis method is used to select the risk evaluation index value of construction project, and the attention mechanism is used to determine the weight of risk factors on construction period prediction;then, BP neural network is used to predict the project duration, and accuracy, cross entropy loss function and F1 score are selected to comprehensively evaluate the performance of 1d-cnn-attention-bp combined model. The experimental results show that the duration risk prediction accuracy of the risk prediction model proposed in this paper is more than 90%, which can meet the risk prediction of construction projects with high accuracy.

Dynamic Deformation Monitoring for Long-Span Bridges under Construction and EMD De-noising Method

Construction progress of long-span bridge is complicated and the quality control is strict. Any disadvantage during construction may potentially affect the internal forces and deck alignments after it is open to traffic. To exactly evaluate the periodic alignments, internal forces and safety, geometrical and physical monitoring are needed during construction. This study aims at the requirement of dynamic geometric monitoring during Sutong Bridge construction, and introduces the realization and observing schemes of the self-developed GPS real-time dynamic geometrical deformation monitoring system. Affected by wind load and construction circumstance, GPS （global positioning system） monitoring signal contains a variety of noise. And the useful signal can be extracted from the signal after de-noising the noises. A de-noising method based on EMD （empirical mode decomposition） model is introduced here to process the bridge dynamic monitoring data, and with the wavelet threshold de-noising method are compared. The result shows that the EMD method has good adaptability, is free from the choice of wavelet bases and the number of decomposition layer. The method is an effective de-noising method for dynamic deformation monitoring to large-span bridges.

智慧城市试点建设的就业效应研究

智慧城市建设作为城市化发展模式的重大变革,其对就业水平的提升作用亟需来自宏观城市层面的经验证据。基于我国284个地级及以上城市面板数据,对智慧城市试点政策开展准自然实验,利用多期DID方法检验智慧城市建设对城市就业的影响及内在机制。研究发现智慧城市建设显著提升了城市就业水平,且通过一系列稳健性检验后结论仍然成立。机制分析表明,智慧城市建设运用现代信息技术推动城市发展模式创新,通过创新驱动产生消费与外资的拉动效应,进而提升城市就业水平。进一步分析发现,智慧城市建设对就业的促增效应在中部地区城市和人口密度较低、经济活动水平较高的普通城市中表现显著。研究结果为智慧城市建设在城市层面上的就业效应研究提供了经验证据。

基于LCA的地铁车站建设期碳排放核算及排放特征研究

地铁在建设期需要消耗大量资源能源,排放大量温室气体。本文基于全生命周期评价理论,采用基于工程定额的清单法,建立了城市轨道交通车站建设期碳排放计算模型,以天津市典型地铁车站工程为案例,分析了车站建设期的碳排放总量和强度,分析了不同施工工法、排放范围的差异。结果表明:地铁车站建设期平均碳排放强度为4.45tCO_(2)eq./m^(2),其中,范围一、二、三排放分别占总排放3.87%、1.74%和94.39%。

论授益行政行为职权撤销的除斥期间——以《行政程序法》制定为视角

职权撤销是按照依法行政原则对违法行政行为的消灭,属于行政机关的自我纠错行为。对于具有持续性法律效果的授益行政行为,毫无时间限制的职权撤销,将对其构建的法律关系网的稳定性及所涉利害关系人权益产生重大影响。职权撤销的期限在性质上属于除斥期间。出于维护法律秩序安定性、规范行政权、避免私方利益遭受更大损失以及避免“过”与“罚”严重失衡等考虑,授益行政行为职权撤销宜设置除斥期间。通过比较研究,出于不同规范功能,除斥期间宜采用短期限与最长期限相结合的方式。短期限采用主观起算标准,以行政机关知道撤销事由之日作为期间起算点;最长期限采用客观起算标准,以行政行为作出之日为期间起算点。因相对人欺诈而行政行为违法的,职权撤销除斥期间只宜设定短期限。

五四时期《资本论》传播力建构的翻译赞助之道

五四时期,《资本论》在中国的传播实现了前所未有的成功,从而进入了中国政治思想文化的中心,有力助推了中国革命的新民主主义转向。五四时期《资本论》传播力建构的成功,得益于五四精英多元互补的翻译赞助策略。通过赞助推出简明的阐释性文本强化《资本论》学理的易解性,在《新青年》等报刊刊文介绍、评论与节译强化传播广度,筹划马克思主义研究会等社团的译介与研究活动、演讲、授课及与进步力量积极互动强化传播深度和力度,五四精英有力赞助了《资本论》的中国传播。五四时期《资本论》传播力建构的翻译赞助之道对当前中国化马克思主义著作的国际传播力建构极具现实启示意义。

“两个结合”视域下五四时期阶级斗争思想传播力建构研究

阶级斗争思想是五四时期中国进步知识分子借以确立无产阶级革命信仰并改变中国革命进程的经典理论之一。陈独秀等五四精英将阶级斗争思想作为新民主主义革命的武器进行传播时,并非机械而教条地照本宣科,而是结合农民阶级在中国革命事业中举足轻重、中国反对帝国主义压迫及大同思想等传统文化根深蒂固的实际,对阶级斗争理论进行了顺应性调适。同中国具体阶级状况的实际和大同思想的结合,有力助推了阶级斗争思想在中国空前成功的传播。五四时期阶级斗争思想传播力建构中的两个结合,对当下中国化马克思主义著作的国际传播力建构颇具现实启示意义。

社会主义革命与建设时期(1949—1976)工人文化宫建筑空间与形式特征初探

20世纪50年代,工人文化宫建筑开始在中国广泛出现。作为一种新兴现代建筑,其对中国现代建筑的发展产生了深远的影响。通过对社会主义革命与建设时期(1949—1976)建设的一批工人文化宫进行调研,并从规划布局、平面形制、建筑立面以及构造装饰四个方面分析工人文化宫建筑空间与形式特征,为后续中国工人文化宫建筑的研究保护提供详尽的基础资料,也有助于完善中国现代建筑史,为当代建筑设计提供新思路。

品牌建设期的高校党建品牌创建路径探究

高校党建品牌建设期整体可分为培育期、成熟期和转型期3个阶段。这3个阶段的建设重点分别是:策划、培育和维护党建品牌,提高品牌质量和美誉度;培育和塑造党建品牌文化,建设文化阵地,增强品牌忠诚度;评估并转型或更新品牌,实现品牌的转型或更新与再创新,保持创新活力。创建高校党建品牌建设期路径有助于高校基层党组织更好地规划和促进党建品牌的发展,以此应对党建品牌在不同建设阶段的需求和挑战。

艰险山区铁路建造期通信综合承载网研究

艰险山区铁路沿线的移动通信基础设施大多较薄弱。在施工建造期,铁路沿线具有语音、数据、视频监控和应急通信等业务需求。分析梳理艰险山区铁路沿线基础设施监测业务,对建造期语音、数据和视频监控需求带宽进行调研,针对施工现场不同的通信网络覆盖场景和不同的业务承载需求,提出具有针对性的施工通信解决方案,采用网络融合方式,搭建一套覆盖全线的建造期通信综合承载平台,实现基础设施监测、语音、视频和应急等业务的传输。同时,探讨建造期通信承载网在运营期开展永临结合,提出永临结合的建设思路。

地铁建设期碳排放核算研究进展

全球变暖是人们高度关注的生态环境问题之一,碳排放成为研究热点。交通运输行业会产生大量能耗,地铁作为一种安全环保的交通方式正高速建设,建筑行业又具有较大减排空间,故对地铁建设期碳排放进行核算有助于预测碳排放趋势并为碳减排提供研究基础。本研究总结了地铁建设期碳排放核算在评估方法选择、系统边界划分、清单分析等方面的研究进展,学者们多基于全生命周期理论,使用排放因子法,将碳排放来源划分为建材生产、材料运输和现场施工3个阶段开展碳排放研究。本研究就现有清单分析内容进行了对比分析,发现建材生产阶段碳排放占比最大,且钢筋、混凝土、水泥是主要的高碳排建材,依此提出了地铁建设碳排放核算的基本研究方法及减排思路。

高原生态保护区内公路施工期地表水评价模型

为了解高原生态保护区内公路施工期造成的地表水环境污染问题,并为施工单位及时掌握地表水环境变化情况提供一定的数据依据及支撑。对公路施工期地表水环境污染源进行分析,选取对于高原生态保护区污染特征具有针对性的水质评价指标因子,建立基于熵权-可拓物元理论的地表水环境评价模型,并结合实际工程验证其适用性及准确性。研究结果表明:①选取石油类、高锰酸盐指数、悬浮物(SS)、氨氮(NH_(3)-N)、总磷(TP)和溶氧量(DO)等6个水质评价指标因子建立评价体系,可以综合反应公路施工期对高原生态保护区地表水环境的影响;②在实际工程应用中,基于熵权-可拓物元理论的地表水环境评价模型得到的分级结果,与单因子指数法及灰色加权关联度法得到的分级结果吻合率达70%及90%,说明该方法具有一定的适用性及准确性。

社会主义革命和建设时期(1949—1976)中国观演建筑外部形态特征研究

在社会主义革命和建设时期(1949—1976),新中国完成了从“农业大国”到“工业大国”的历史巨变。这其中,观演建筑作为承载这一时期群众生活文化建设的物质载体,见证了其中的历史思潮发展,并直观体现在其外部形态特征上。该文拟通过文献查阅厘清全国观演建筑分布特征,并进一步从构图形式和风格特征两个方面对其外部形态特征展开研究,分析其不同形式背后的特定内涵与文化,既为当下建筑设计的多元化语境提供历史依据,也为相关部门对这一特定时期的历史建筑评价提供参考依据。