Ngày tạo : 15/07/2015
Tạp chí KHCN Xây dựng số 2/2008
Tạp chí KHCN
Xây dựng
Về kinh nghiệm biên soạn và áp dụng quy
chuẩn xây dựng của Vương quốc Anh
TS. Nguyễn Ngọc Bá
Ý nghĩa thực tiễn của các dạng sơ đồ phân
bố ứng suất nén của bê tông trong tiêu chuẩn thiết kế
ThS. Nguyễn Duy Chinh
Nghiên cứu và áp dụng các thông số tối ưu
của bộ hấp thụ dao động TMD-N đối với hệ con lắc ngược vào việc giảm dao động
cho tháp nước
PGS. TSKH Trần Mạnh Liểu, CN. Nguyễn Ngọc Anh, KS.
Nguyễn Chí Quyết
Phân vùng điều kiện địa chất công trình
đô thị Hà Nội phục vụ quy hoạch các khu chôn lấp chất thải rắn hợp vệ sinh
TS. Trần Minh Đức
Những đặc điểm trong thiết kế tu bổ kết
cấu gỗ công trình di tích
ThS. Lưu Thị
Hồng
Nghiên cứu ảnh hưởng của hàm lượng xỉ lò
cao tới độ bền sunphat của đá ximăng
TS. Vũ Văn Đại, KS. Đoàn Văn Động, CN. Nguyễn Quyết
Chiến
Định hướng giải pháp thiết kế và vận hành
hiệu quả hệ thống điều hoà không khí trung tâm nhà cao tầng
KS. Lê Văn Hùng
Hiệu quả kinh tế - kỹ thuật của việc sử
dụng kết hợp máy toàn đạc điện tử Trimble 5602 và GPS Trimble R3 trong quan
trắc chuyển dịch công trình
KS. Trần Ngọc Đông
Giải pháp hợp lý khi quan trắc chuyển
dịch ngang cầu đường bộ có chiều dài ngắn bắc qua sông bằng phương pháp trắc địa
This paper summarizes the content presented at the seminar “Application of building regulations - experience by the United Kingdom” co-organized on March 20, 2008 by the Vietnam Institute for Building Science and Technology (IBST) and the UK embassy to Vietnam in Hanoi. It covers the related aspects of the above matters such as: principles and organization for developing a building regulations, responsibilities of BRAC (Building Regulations Advisory Committee), basis for proposing main contents of the regulation, receiving and treating opinions, comments from key stakeholders, private citizens, professional experts, recommendation to Minister about the regulation,.. in order to get a good building regulation. The paper also presents experience by the UK in convincing the industry to accept and comply with the building regulations.
Practical use of concrete stress blocks in design standards (pp. 7-11)
Dr. Nguyen ngoc ba
For practical design purpose, most of design standards provide simplified concrete stress blocks to be used instead of the complex stress-strain curve that can represent the curve obtained from testing of concrete. Although different shapes of concrete stress blocks are provided by different standards, only one that design engineers concern, the others may be used by other purposes. This paper introduces different concrete stress blocks provided in advance design standards and discusses the practical use of such blocks.
MEng. Nguyen duy chinh
In [10] Khong Doan Dien and Nguyen Duy
Chinh investigated the vibration of inverse - pendulum system with the TMD
damper. These results are applied to simulate numerically for the articulated
tower in the ocean. In some cases, the amplitude of oscillation of inverse -
pendulum system of with the TMD damper increases when compared to the one of
inverse - pendulum system of with no TMD and due to the random choice of TMD
parameters. In the paper, the authors investigate to choose the optimal
parameters of the TMD-N in order to stamp oscillation of inverse - pendulum
system and application of these results for damping the oscillation of water
tower.
This paper introduces the result of the research theme on zoning Hanoi land area according to the integrated characteristics of geological conditions for planning the area to be used to burry hygienically the solid wastes and the corresponding calculation results. The analytic hierarchy process by Thomas Saaty was applied to the zoning work. Results of the zoning work is the map that evaluates the favorable level for selecting the area suitable for burying hygienically solid wastes.
Features of design for restoring timber structures of monument (pp. 26-31)
Dr. Tran Minh Duc
It is very complicated for calculation/analysis of timber
structures in the conservation and restoration projects of old timber monuments
because the nature of joints between timber elements (mainly the tenons) have
been changed with the time due to the deterioration of the timber. It is not
only difficult in assessing the behavior of old timber structures but also in
selecting the new types of joints between the old parts and the new ones of
timber elements.
In this paper, the author presents some test results applied to timber elements
for assessing and selecting the joint types suitable for connecting old part s
of timber elements to the new ones in restoring old timber monuments.
MEng. Luu thi hong
Sulphate resistance cements have been researched and applied to special building projects on the world long time ago. This study aims at investigating by experiment the expansibility occurring of slag cement after being immersed in a sulphate solution. The ordinary portland cement (OPC) was partially substituted, respectively by: 0%, 20%, 40%, 50%, 60%, and 70% of ground blast furnace slag by weight. The slag cements were exposed to a solution containing 352 moles of Na2SO4 per m3. The result of this investigation shows that the content of SO3 of slag has an important role with regard to the sulphate resistance of slag cement.
Energy saving is one of the important objectives in this century for sustainable development and environment protection. With regard to high-rise buildings, saving energy for the air-conditioning system has been paid much attention to. In this paper, the authors present some basic principles, requirements and feasible solution applicable to design and operation of the central air-conditioning system for the purpose of saving electric energy.