Tạp chí KHCN Xây dựng số 2/2008
Ngày tạo : 14/07/2015
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
ABSTRACT
On the experience of
developing and applying building regulations by the UK (pp. 3-6)
IBST’s Journal
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.
Studying and applying
optimal parameters of the TMD-N absorber for inverted pendulum type to the
damping of the water tower oscillation (pp. 12-20)
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.
Zoning the geological
condition of Hanoi
urban area for planning the area burying hygienically solid wastes (pp. 21-25)
A/Prof.
Dr. Sc. Tran
Manh Lieu, BA. Nguyen Ngoc Anh, Eng.
Nguyen chi quyet
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.
Studying the influence of
blast furnace slag content on the sulphate resistance of cement stone (pp.
32-35)
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.
The orientation of
effective solutions for design and operation of the central air-conditioning
system of high-rise buildings (pp. 36-40)
Dr. Vu Van Dai, Eng.
Doan Van Dong, BA. Nguyen Quyet chien
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.
Technical-economical
effectiveness of using total station Trimble 5602 and GPS Trimble R3 to monitor
the displacement of building structures (pp. 41-45)
Eng. Le Van Hung
In this paper, the author
presents the ability to combine applying the total station and the Global
Positioning System (GPS) to the monitoring of the roof truss displacement of
important buildings that require a high monitoring accuracy, particularly the
technical-economical effectiveness of this combination method in comparison
with the common method (the traditional one). The combination application of
these surveying instruments should be widely disseminated and established as a
procedure for favourable applying to large-span space steel truss structures.
Rational solution for lateral displacement
monitoring of bridges with short lengths spanning over rivers with
geodetic method (pp. 46-53)
Eng. Tran Ngoc Dong
In this paper, the author
analyses the three ways usually applied to monitor the lateral displacement
with surveying methods, namely: traditional method, GPS method, and the
combined method, applying total station together with GPS technology. By
comparing the strong points and weak points of the three ways, the author would
like to show that the combined method, applying total station together with GPS
technology is the best one for monitoring lateral displacement of bridges with
short lengths spanning over rivers. In fact, this methos also bring in high
technical-economical effectiveness that should be widely applied to surveying
work.
