Tạp chí KHCNXD

Tạp chí KHCN Xây dựng số 4/2006

Ngày tạo : 15/07/2015

Tạp chí KHCN Xây dựng số 4/2006

Viện KHCN Xây dựng - một số kết quả nghiên cứu nổi bật trong năm 2006,
PGS.TS. Cao Duy Tiến, TS.
Vũ Thị Ngọc Vân
Mô hình hóa các công trình trong ống thổi khí động

ThS. Vũ Thành Trung
Sử dụng các thiết bị hiện đại điều khiển thông hướng đường hầm áp lực NM máy thủy điện A Vương - Quảng Nam,
TS.
Ngô Văn Hợi
Tính toán tiết diện bê tông cốt thép chịu nén lệch tâm bé theo TCXD VN 356:2005,
ThS. Đặng Thế Anh
Phục hồi góc chuyển hướng các đoạn hành lang HL-01 và HL-04 trong Tử Cấm thành,
KTS. Nguyễn Minh Khôi, TS. Nguyễn Tiến Bình
Phân vùng dự báo khả năng ổn định hệ thống đê sông đồng bằng Bắc bộ trước tác động của quá trình phá hủy thấm nền đê - lấy ví dụ cho Hà Nội, 
TSKH. Trần Mạnh Liểu
Tiêu chuẩn bê tông ở Việt Nam - hiện trạng và xu hướng hội nhập quốc tế,
ThS. Trương Thị Hồng Thúy
Diễn biến tiếng ồn giao thông trong 10 năm qua ở Hà Nội,
GS.TSKH. Phạm Ngọc Đăng, KTS. Phạm Ngọc Hồng
Bố trí hợp lý neo cho tường chắn có neo,
PGS. TS. Nguyễn Hùng Sơn, ThS. Vũ Quang Trung

ABSTRACT
Institute for Building Science and Technology - Some remarkable research results in 2006 (pp. 3-8)
A/Prof. Dr.cao duy tien, Dr. Vu thi ngoc van
This paper presents some remarkable research results gained in the year of 2006 by Institute for Building Science and Technology in the following aspects: scientific research themes conducted, building standard and codes developed and the economic non-productive &international cooperation Projects. By presenting the research results obtained in 2006, the authors of the paper would like to seek the cooperation by individuals, organizations that are interested in the building science and technology field.

Modelling of structures for wind tunnel (pp. 9-15)
MEng.Vu Thanh Trung
In this paper, the author presents the modelling of structures for wind tunnel that is one of the most important works. Also, this work effects to testing results in wind tunnel. There are three types of model, namely rigid model, rotation model, aeroelastic model.The modelling of structures for wind effects requires knowledge of dimensional analysis and the theory of modelling.
Researchers of IBST will have to master these problems, so that help to operate the wind tunnel at IBST.

Application of modern surveying equipment to controlling the proceeding of the water leading tunnel of the A Vuong hydro-power plant excavated from the two ends (pp. 16-19)
Dr. ngo van hoi
According to the construction measure, the 5.3km-long water leading tunnel of the A Vuong hydro-power plant, Quang Nam province, must be proceeded from the two ends with a tolerance of ± 10cm. Therefore, the control of the correct alignment of the tunnel, in terms of line and grade, is an important task. In this paper, the author presents the application of modern surveying equipment such as: GPS receiver TRIMBLE 4600LS, high-precision total station LEICA TC-1800,.. to controlling the proceeding of the said tunnel excavated from the two ends. By skill and experience, this task was completed successfully by the Surveying engineering Department (IBST). Two branches of the tunnel proceeded from two ends has connected to each other with an error of only 69mm in plan and 22mm in elevation.

Calculation of reinforced concrete cross-section subject to small eccentrical press according to tcxdvn 356:2005 (pp. 20-24)
MEng. Dang The Anh
This paper presents a method for determining the height of the compression zone (x) of reinforced concrete (RC) cross-section subject to small eccentrical press according to TCXDVN 356:2005 [1]. Based on suppositions and basic conditions in [1], a cubic equation is formed to calculate x accurately. To avoid the complexity of solving the equation, the author suggests some approximate formula for calculating x in practice. In this paper, the non-dimensional interaction diagrams according to [1], an useful tool for designing and checking the eccentrical press R.C members, and its formulation have been established.

Restoration of the turning angles of the corridor's segments of N0.1 and N0. 4 in the Forbidden Purple City (pp. 25-30)
Arch. Nguyen Minh Khoi, Dr. Nguyen Tien Binh
This paper presents the design solution applied for restoration of the turning angles of the corridor's segments N0.1 and N0. 4 in the Forbidden Purple City - Great Enclosure of Hue Citadel. The design solution was prepared based on the remaining traces of the said corridor's segments, the remaining foundation and a theoretical analysis. In addition, the solution wasalso completed by referring to the photos taken from the existing state of the Forbidden wall and the opinions by experienced high-class carpenters.

Zoning for predicting the stability of dike system under action of permeable flow through the base - An example of Hanoi dike system (pp. 31-35)
Dr. Sc. tran manh lieu
Based on the mechanism of damage process due to the permeable flow through the dike's base, the author of the paper presents the principles of the zoning for predicting the stability of dike system after two parameters, namely K (the coefficient that indicates the possibility against the burst of soil) and Igh (the limit gradient for soil pushing). Nearby - dike zone is considered as stable when Idn < Igh, K > 1, and it is considered unstable when Idn > Igh, K > 1, and very unstable when Idn > Igh, K < 1. In the paper, the zoning for predicting the stability of the Red river and Duong river (in the North of Vietnam) system were dealt with.

Concrete standards in Vietnam - the existing situation and the tendency of international integration (pp. 36-40)
MEng. Truong Thi Hong Thuy
In this paper, the author presents, in detail, the existing situation of the Vietnam standard system for concrete including the number of concrete standards in different industries (construction, transportation and irrigation), the institutions that manage and issue the standards, the lay-out and detailed content of the standards,.. and compare them with the actual development requirements to find out the strong point as well as the weak point of this system. From this, the author points out the contents of the renovation and re-planning cause for the Vietnam concrete standard system in order to integrate into the related international standard system.

The change of transportation noise level in period of 10 years of Hanoi (pp. 41-45)
Prof. Dr.Pham Ngoc Dang, Arch.Pham Ngoc Hong
This paper presents monitoring results of the change of yearly average transportation noise level in period of 10 years in Hanoi, presents the change of average traffic volume and average noise level per hour during working, weekend, rain and sunny days in some main streets of Hanoi.
This paper also presents forecast of transportation noise level in some main streets of Hanoi to the year of 2010, and presents measures for reducing transportation noise level in Hanoi.

Rational arrangement of anchors in retaining wall (pp. 46-48)
A/Prof. Dr. Nguyen Hung Son, MEng. Vu Quang Trung
Using ground anchors to stabilize retaining walls is a new technology, that no longer havebeen applied in Vietnam. For the purpose of increasing in the effect of using this method, the problems of rational arrangement of anchors in retaining wall are presented in this paper. There are two approach criteria are mentioned here. The first criterion is how to choose the angle of anchor to obtain the highest value of factor of stability, and the second one is how to get the right place of anchored cap when using the angle of anchor obtained from the first criterion.

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