Tạp chí KHCNXD

Tạp chí KHCN Xây dựng số 2/2007

Ngày tạo : 15/07/2015

Tạp chí KHCN Xây dựng số 2/2007

Viện KHCN Xây dựng với công tác biên soạn tiêu chuẩn xây dựng Việt Nam theo hướng hội nhập Quốc tế,

PGS.TS. Cao Duy Tiến, TS. Vũ Thị Ngọc Vân

Giải pháp nâng cao hiệu quả quản lý chất lượng công trình xây dựng,

KS. Cao Văn Hà

Một số vấn đề nghiên cứu trong biên soạn tiêu chuẩn thiết kế công trình chịu động đất TCXDVN 375:2006,

GS.TSKH. Nguyễn Đăng Bích , KS . Lê Khánh Linh

Công tác trắc địa trong xây dựng đường hầm,

TS. Ngô Văn Hợi

Các thử nghiệm đốt đối với vật liệu và bộ phận công trình và việc áp dụng ở Việt Nam,

ThS. Hoàng Anh Giang

Tìm hiểu bản chất và khả năng cải thiện chất lượng sơn truyền thống, 

TS. Trần Minh Đức, KS. Bùi Thị Nghị

Ảnh hưởng của nồng độ ion clo, độ ẩm và chiều dày bê tông đến quá trình ăn mòn cốt thép,

TS. Hoàng Thị Bích Thủy, KS. Phạm Ngọc Hiệu

Đặc điểm thông tin địa chất và khả năng sử dụng các mô hình xác suất trong nghiên cứu tai biến địa chất,

TSKH. Trần Mạnh Liểu

Mô phỏng tiến độ thi công công trình bằng phương pháp Monte Carlo, 

ThS. Lại Hải Đăng, ThS. Lưu Trường Văn

ABSTRACT
Institute for Building Science and Technology with the development of Vietnam building standards according to the tendency of International integration (pp.3-5)

A/Prof. Dr.
cao duy tien, Dr.Vu thi ngoc van
In this paper, the authors introduce the development ofsome Vietnam building standards, using Eurocodes as the basis, according to the tendency of International integration. The Vietnam building standards developed based on Eurocodes mentioned in the papers are: Eurocode 0 (Basis of structural design), Eurocode 1 (Actions on Structures), Eurocode 2 (Design of Concrete Structures), Eurocode 3 (Design of Steel Structures),Eurocode 6 (Design of Masonry Structures), Eurocode 7 (Geotechnical Design), Eurocode 8 (Design of Structures for Earthquake Resistance) and many other relevant Eurocodes. General principles for developing Vietnam building standards using Euroceds are also specified in the paper.

Solutions for improving the effectiveness of quality management of building structures (pp.6-8)

Eng.
Cao Van Ha
In this paper, the author points out the weak points and their causes in respect of the quality management of building structures in Vietnam in different aspects such as: soil investigation, terrain surveying, design, estimation of quotation, construction and operation stages,.. and proposes the main solutions for improving the effectiveness of the quality management of building structures in Vietnam .

Some researched problems when developing the standard Design of seismic resistant building structures, TCVN 375:2006 (pp.9-16)

Prof. Dr Sc.Nguyen Dang Bich, Eng. Le khanh linh

This paper presents the problems that have to be solved when developing the Vietnam standard TCVN 375:2006: Design of seismic – resistant building structures on the basis of adoption of Eurocode 8, including: (1) seismic zoning map, (2) selection of the curvature of elastic response spectrum (type 1) and (3) the factor of importance of building structures.
The authors would also like to recommend that the standard TCVN 375:2006 contains many new and modern rules, specifications, and concepts so the user should be provided with a training course to understand thoroughly the standard before applying it to the calculation and design of seismic-resistant building structures.

The surveying engineering work in construction of tunnels (pp.17- 21)

Dr.Ngo van hoi

In this paper, the author presents the concepts of tunnels,the history of construction of tunnels in some countries all over the world and that in Vietnam . The author also presents methods for construction of tunnels and the important role of surveying engineering in construction of tunnels, from topography surveying for the design of the tunnel’s line to the monitoring of the tunnel’s deformation during putting the tunnel in to operation.

Fire tests for building materials and structural elements and their application to Vietnam (pp.22- 27)

MEng.hoang anh giang

This paper presents the necessity to perform the fire tests for building materials and structural elements and some opinions by the author on the ability to apply these fire tests to building material and structural elements in Vietnam for the purpose of fire safety of building structures.

Learning about the nature and the ability to improve the quality of traditional paint (pp.28-34)
Dr.Tran minh duc, Eng. bui thi nghi
When talking about traditional paint, people often thing of the wax from wax-tress only. In fact, traditional paint can be constituted from the wax and many other ingredients. Normally, there are two ingredients in traditional wax: asphalt vanish and oil-paint. Therefore, the properties of traditional paint depends much on the its compositions. This paper introduces a study on the nature of traditional paint and the ability to improve it.

Influence of the chloride concentration, humidity and thickness of concrete on the corrosion of steel reinforcement (pp.35-41)

Dr.
hoang thi bich thuy, Eng. pham ngoc hieu
Vietnam
is a humid tropical country with over 3,200km coastline which favours corrosion of metals. The number of marine steel and reinforced concrete structures, such as oil rigs, habours, piers, . . . is increasing more and more, especially in the very period of developing marine industries.
Reinforced concrete has been widely used for construction. However these structures gradually degrades due to corrosion of steel reinforcements induced by ingress of aggressive agents. Ingress of chloride from marine environment is the main cause of corrosion of steel in concrete which results in damages to the structures after a short time of operation.
This paper presents a study on the influence of chloride concentration, humidity and thickness of concrete cover on the corrosion of steel in concrete. Experiments were carried out with conditions similar to marine environment. The influence of above factors on the corrosion of steel reinforcment was studied by potentio-dynamic method, linear polarization in combination with observation of steel surface after testing period.

Geological information and possibility to use probability models for geological risk study (pp. 42- 45)
Dr. Sc. Tran Manh Lieu
This paper analyze the possibility to quantify geological information, the random nature and relative (inheritable) property of geological information and the possibility to use appropriate mathematical models (predetermination model, Markov and Bernuly chains) for evaluating, predicting geological risk and process.

Applying Monte-Carlo simulation for the construction schedule in Vietnam (pp.46- 52)
MEng.Lai Hai Dang,MEng.Luu Truong Van
The schedule delay is popular for various construction projects that cause considerable loss to project parties. It is widely accepted that construction project schedule plays a key role in project management due to its influence on the project success. Thus, it is important to quantify probabilities of project completion on time for improving project management. This paper describes that how Monte Carlo simulation (MCS) can be applied to simulate the construction schedule performance and to estimate the probability of project completion under uncertainty conditions. A flow chart was developed so as to run MCS for construction schedule of building projects. Triangle distribution tended to be appropriate for the probability distribution function (PDF) of construction activities. The new hospital of Medical University of HCM City was used as a case study to validate the model using applied software developed by authors.

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