Achievement and Future Prospects of ICT Construction in Japan

2016 ◽  
Vol 28 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Kazuyoshi Tateyama ◽  
Keyword(s):  
Population Projections ◽  
Tax Revenue ◽  
Construction Technology ◽  
Future Prospects ◽  
Budget Cuts ◽  
Promising Tool ◽  
Complex Projects ◽  
Severe Reduction ◽  
New Construction ◽  
Construction Model

[abstFig src='/00280002/02.jpg' width=""300"" text='Unmanned construction system' ]Population projections for Japan suggest that the production-age population, ages 15 to 64, will be 70% or less in 2045 than that of today. In the field of construction, such rapid reductions in the production-age population will bring about a severe reduction in the number of workers as well as budget cuts in infrastructure investment due to the decrease of tax revenue. At the same time, infrastructure, which has already been constructed, is now due for maintenance and approaching its renewal dates. Therefore, the task of stably providing infrastructure for society into the future will be more difficult than ever. In the field of construction, more complex projects will have to be carried out with limited manpower and budgets. This problem will be addressed, not by an extension of existing means, but by innovations in construction technology. ICT (Intelligent Construction Technology) is expected to be a promising tool to meet these future needs. This article discusses current conditions and future prospects for a new construction model utilizing ICT in Japan.

scholarly journals Research on Green Construction Technology Applied at Guangzhou Hongding Building Project

2018 ◽  
Vol 38 ◽  
pp. 03017
Author(s):  
Yong Zhong Lou
Keyword(s):  
Construction Industry ◽  
Development Strategy ◽  
Construction Technology ◽  
Green Construction ◽  
New Construction ◽  
Specific Practice ◽  
Traditional Construction ◽  
Construction Model ◽  
Building Project ◽  
Construction Mode

The green construction technology is the embodiment of sustainable development strategy in the construction industry, and it is a new construction mode which requires a higher environmental protection. Based on the Hongding building project, this paper describes the application and innovation of technical in the process of implementing green construction in the project, as well as the difficulties and characteristics in the specific practice; .The economic and social benefits of green construction are compared to the traditional construction model; .The achievements and experience of the green construction technology are summarized in the project; The ideas and methods in the process of implementing green construction are abstracted; some suggestions are put forward for the development of green construction.

scholarly journals Optimal Design and Practice of the Construction Scheme for Laying the Whole Track Bed on the Subway Ballastless Track

2020 ◽  
Vol 165 ◽  
pp. 04003
Author(s):  
Chen Hui ◽  
Qi zhenfang
Keyword(s):  
Construction Industry ◽  
Modern Society ◽  
Rail Transit ◽  
Construction Technology ◽  
Ballastless Track ◽  
Construction Scheme ◽  
New Construction ◽  
Design And Practice ◽  
Stable Development ◽  
Modern Building

In the development of modern society, our country attaches more importance to the development of the construction industry, and strengthens the supervision, so that the construction industry can be developed to the mode of industrialization. That combining with the construction needs of prefabricated concrete assembly in our country and taking comprehensive analysis of various factors and application, can enhance the structural stability and safety of prefabricated concrete assembly, thus can meet the needs of the modern building industrialization development, and improve the overall quality and efficiency. In the development of subway transportation field, laying the whole track bed of Ballastless track is an important core work, which is the new construction of rail transit. This paper made perfect management system, carried out all kinds of work, improved the construction technology of the whole track bed and perfected the construction plan, with the result of prolonging the service life of the subway ballastless track and promoting the stable development of modern society in our country.

scholarly journals New Construction Technology of a Shallow Tunnel in Boulder-Cobble Mixed Grounds

2020 ◽  
Vol 2020 ◽  
pp. 1-20 ◽  
Author(s):  
Tong Liu ◽  
Yujian Zhong ◽  
Zhihua Feng ◽  
Wei Xu ◽  
Feiting Song ◽  
...  
Keyword(s):  
Surrounding Rock ◽  
Construction Technology ◽  
Construction Process ◽  
Tunnel Excavation ◽  
Supporting System ◽  
Highway Tunnel ◽  
Bulk Medium ◽  
New Construction ◽  
Secondary Lining ◽  
Design And Construction

As a typical granular bulk medium, problems are common in boulder-cobble mixed grounds, such as easy collapse and instability and difficult effective support for large-section tunnel excavation. Tunnels constructed in BCM grounds are rare still, and there is a big gap between the design and construction of tunnels. Based on the Nianggaicun highway tunnel crossing the BCM grounds, the construction technology of tunnel in BCM grounds is studied by means of literature investigation and field survey. Here are the main conclusions: the overall deformation of surrounding rock is quite small; the pressure distribution of surrounding rock is small and loose pressure is dominant, and the safety reserve of secondary lining is large. The deformation process of surrounding rock concentrates on the construction stage. During the construction process, there are many problems, such as serious overexcavation, difficulty of bolt penetration, and continuous rock fall. In this paper, a three-bench complementary cyclic excavation method is proposed, which replaces the original CD and CRD methods. Meanwhile, the supporting system is optimized. The results show that the disturbance of surrounding rock is reduced, while the safety of construction process and the reliability of structure are increased. The new excavation method and optimized supporting system are expected to fill the gap between design and construction of tunnel in BCM grounds and provide reference for construction of such tunnels in the future.

New Technology of Installing the Attached Self-Climbing Tower Steel Gantry Cranes

2014 ◽  
Vol 484-485 ◽  
pp. 245-253
Author(s):  
Ming Guang ◽  
Hong Sheng Li ◽  
Hua Guo Yang
Keyword(s):  
New Technology ◽  
Plate Thickness ◽  
Gantry Crane ◽  
Maximum Height ◽  
Construction Technology ◽  
Pipe Segment ◽  
New Construction ◽  
Girder Bridge ◽  
Gantry Cranes ◽  
Bridge Tower

The Liujiaxia Bridge is 536 m span steel truss stiffening Girder Bridge, tower with double-column steel concrete structure, which is the world's largest diameter, the largest steel plate thickness of concrete pylon. Sarasota manufactured using standard pipe segment, group fight scene segment piecewise hoisting tower segment perfusion within the micro-expansion concrete construction technology, tower maximum height of 61.5 meters. This paper describes a piecewise Sarasota steel installation, piecewise perfusion within the micro-expansion concrete tower new construction method - attached to a self-climbing tower bridge gantry crane mounted pylon construction technology of large steel components. Of the "entity attached to the pylon installation of equipment by section climb" design, composition and construction applications are described in detail.

CERVICAL SPINOLAMINOPLASTY WITH NEWLY DESIGNED TITANIUM MINI-PLATES

2016 ◽  
Vol 16 (04) ◽  
pp. 1650050
Author(s):  
CAN YALDIZ ◽  
TOLGA TOLUNAY ◽  
ARSLAN KAĞAN ARSLAN ◽  
ONUR YAMAN ◽  
TEYFIK DEMIR
Keyword(s):  
Conventional Method ◽  
Cervical Vertebrae ◽  
Spinous Process ◽  
Fixation Method ◽  
Open Door ◽  
Compression Tests ◽  
New Construction ◽  
Construction Model ◽  
Mini Plate ◽  
Ultra High Molecular Weight

One of the complication of cervical laminoplasty is the restenosis of the opened laminae. Weakness of the screws placed on laminae may cause restenosis. Here, we describe a new technic ‘spinolaminoplasty (Turkish Open-door laminoplasty)’ with newly designed titanium mini plate that placed one side to lateral mass, and the other on spinous process to keep the laminae opened. Two different fixation materials were used for axial compression tests. One was Ultra high molecular weight polyethylene block with cervical vertebrae geometry and fresh ovine cervical vertebrae. In the first group, mini plates were fixed on laminae as in the conventional method described by Hirabayashi. In the second group, mini plates were fixed on spinous process to perform spinolaminoplasty with single and double screws. New fixation method with double screw provides 26% higher stiffness than the closest group, namely new fixation on polyethylene block. And new fixation method with double screw was exhibited significantly higher ([Formula: see text]) performance between the Ovine groups. As in the spinolaminoplasty technic fixing the mini plates to spinous process with longer screws instead of laminae, strengthens the system compared to the conventional method. This proves that rigidity of new construction model is more stable than the conventional method. Tight fixed laminae may prevent restenosis. Also applying the screw through spinous process instead of laminae may prevent the possible cord injuries.

scholarly journals Cognition, Application and Discussion on Shaped Charge Hydraulic Smooth Blasting Technology

2021 ◽  
Vol 4 (2) ◽  
pp. 5
Author(s):  
Xiuyong Ni ◽  
Suqin Han ◽  
Peng Li ◽  
Xiwu Wei
Keyword(s):  
Comprehensive Evaluation ◽  
New Technology ◽  
Construction Technology ◽  
Tunnel Excavation ◽  
Main Method ◽  
Excavation Process ◽  
New Construction ◽  
China Railway ◽  
Operation Cycle ◽  
Smooth Blasting

In the past, the main method of tunnel excavation in China was drilling and blasting, but the biggest shortcoming of the traditional drilling and blasting method is that it is easy to cause serious overexcavation and underexcavation. At the same time, the operation cycle time of this method is long, which leads to a serious waste of resources. Not only that, a large number of toxic gases and dust produced after blasting also do harm to the health of construction workers. So this is an urgent need for a new construction technology to solve this worldwide problem. In this situation, the leading experts in the field of tunnel, "The survey and design master of China" Shi Yuxin, Liu Pei, and well known expert in explosion field, yan-sheng ding, professor Chen Chengguang and Gu Yicheng, the experts group, cooperate with The Fifth Branch of China Railway 18th Bureau in northwest project management department, developed a new technology. This technology has passed the appraisal of scientific and technological achievements organized by Tianjin Science and Technology Commission, which is shaped hydraulic smooth blasting technology. The comprehensive evaluation of the technology is "international leading" level.This paper is mainly aimed at the drawbacks of drilling and blasting construction,combined with the author's cognition and discussion on the introduction of the new technology of cumulative hydraulic blasting and the practical application effect in the tunnel excavation process of the fourth company of China Railway 14th Bureau Group in the second division of the 9th bid section of Zhangjihuai Railway in Huainan Province.

scholarly journals Where was the Toaster? Interplay of Episodic Memory Traces and Semantic Knowledge during Scenario Construction

2021 ◽  
Author(s):  
Carina Zoellner ◽  
Nicole Klein ◽  
Sen Cheng ◽  
Ricarda Schubotz ◽  
Nikolai Axmacher ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Memory Retrieval ◽  
Semantic Knowledge ◽  
Promising Tool ◽  
Desktop Virtual Reality ◽  
Memory Traces ◽  
Memory Failure ◽  
Underlying Mechanisms ◽  
Task Irrelevant ◽  
Construction Model

Experiences that are retrieved from memory are often not accurate, but prone to biases. The interplay of already existing semantic knowledge and recently generated episodic memory traces might explain some of the underlying mechanisms. The scenario construction model postulates that during encoding, only the gist of an episode is stored in the episodic memory trace and during retrieval, any needed information that is missing from that trace is constructed from semantic knowledge. The current study aimed to investigate semantic construction in a realistic, yet controlled setting. Using a desktop virtual reality (VR) participants navigated through a flat in which some household items appeared in unexpected rooms, creating conflicts between the experienced episode and semantic expectations. During recall after two separate retrieval delays (one day vs one week) we were able to identify influences from semantic knowledge. To manipulate salience, some objects were task-relevant, and some were irrelevant to the sequence of actions. We used spatial and temporal recall measures. Both congruency and task-relevance, but not time, predicted correct episodic memory retrieval. In the spatial memory retrieval, semantic construction was more likely than guessing in cases of episodic memory failure and occurred more frequently for task-irrelevant objects. In the temporal recall at the second retrieval delay we could show that object-pairs belonging to the same semantic room-category were temporally clustered together compared to object-pairs from different semantic room-categories. Taken together, our findings support the predictions of the scenario construction model, as we found influences of semantic knowledge on both spatial and temporal memory recall. The new VR-paradigm appears to be a promising tool for investigating semantic construction.

Study on Schedule Control in AP1000 Nuclear Plant Project

2010 ◽  
Author(s):  
Xiaopeng Fang
Keyword(s):  
Nuclear Power ◽  
Construction Technology ◽  
Construction Project Management ◽  
Modular Construction ◽  
Schedule Control ◽  
Schedule Management ◽  
Construction Techniques ◽  
New Construction ◽  
Construction Schedule ◽  
Parallel Construction

The construction of AP1000 Nuclear Power Plant (NPP) has commenced in China. The AP1000 NPP features a passive design concept and modular construction technology. Based on the management of the construction of current AP1000 NNP, this paper describes the effects on Nuclear Island (NI) construction project management resulting from modular construction technology, as well as new construction techniques and methods. This paper puts forward new requirements for construction schedule management of the nuclear island construction at different levels. The AP1000 NI construction logic features the parallel construction of civil and structural erection as the main approach, with the integrated schedule of module fabrication, assembly and installation as support.

Sign in / Sign up

Export Citation Format

Share Document