Archive

23 August 1993, Volume 12 Issue 4 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Tests and Analysis on the Improving Mechanism of Silica Fume to the Concretes Gong Shanglong 1993, 12(4): 1-10.  Abstract ( )   PDF (626KB) ( )   This article describes the mechanism by which silica fume improves the concrete. The tests and analysis on which the article based aimed at the international contravcrsial focus at present-docs silica fume improve the paste itself or the bond strength of the paste to the aggregtes? The tests showed that silica fume can obviously improve the strerngth of the paste while the bond strength is still the weakest part in the concrete. Related Articles | Metrics

Select

Testsing Research of Mechanical Properities for Prestressed Rib-Tile Xiong Guangze 1993, 12(4): 11-21.  Abstract ( )   PDF (607KB) ( )   Prestressed rib-tile is a kind of new roof structure with "V"section. Testing of its mechanical properties shows that it has high crack resistance, high permissible applied loads and ductility. Our investigation will provide more reasonable data in the further design, calculation and construction. Related Articles | Metrics

Select

Study on the Shiplock Models of the Three Gerges Project Tang Shouxin 1993, 12(4): 22-27.  Abstract ( )   PDF (384KB) ( )   The Yangtze River has always been called as the "Golden water way", so full attention should be paid to the planning, design, constraction and operation management of the shiplocks of the Three Gorges Project in order to make the water transport in this river well-operated. In this article, three types of shiplock models, "successive five-stage shiplock", "three-stage shiplock with a channel in the middle" and "three-stage shiplock with a regulating, water pool", are analysed and compared from the point of view of technology, economy and operation management. And the three-stage shiplock with a regulating water pool is considered to be the more ideal shiplock model for the Three Gorges Project. Related Articles | Metrics

Select

Discussion on Some Problems of the Dug-in Basin at River Ports Pan Baoxoing, Lin Rongwang, Li Xinsheng 1993, 12(4): 28-38.  Abstract ( )   PDF (686KB) ( )   On the basis of large numbers of site investigations and model tests, this paper discussed the following problems for river dug-in basin under or beyond tide influence:site section, planning diameter of dug-in basin and channels and environmental protection. Related Articles | Metrics

Select

Displacement & Settlement Measurement for the Cellular Steel Sheet Pile Wharf at Xinsha Port Area of Guangzhou Port Zuo Mingfu 1993, 12(4): 39-44.  Abstract ( )   PDF (404KB) ( )   Cellular steel sheet pile bulkhead structure as the understrurc of guay are introduced into China for the first time for the five 35, OOODWT berths of Xinsha Terminal Project phase 1, Port of Guangzhou. Movement and settlement of the guay front are monitored during construction and maintenance period. A preliminary summary snd qualitative analysis of the observation data from early June 1990 to early March 1992 are made here. Related Articles | Metrics

Select

Analysis of Earthquake Liquefaction of North Anchorage of Jangyin Highway Bridge Over the Yangtze River Li Jian, Ma Jin 1993, 12(4): 45-50.  Abstract ( )   PDF (389KB) ( )   Jangyin Yangtze River Highway Suspension Bridge has the maximum span length (1385 m) nowadays in China. In this paper, earthquake liquefaction of north anchorage of the bridge was analysed qualitatively and quantitatively. Related Articles | Metrics

Select

Simplified Analysis of Carriageway Slab for Ribbed Slab Bridge Luo Qizhi, Chen Xiangyun 1993, 12(4): 51-56.  Abstract ( )   PDF (354KB) ( )   This paper analyzed the carriageway slab of ribbed slab bridge with sonic common dimensions by means of the finite strip method in high orders, and compared the results with that obtained by current design methods inland and abroad. On this basis authors proposed the rational simplified formulas to calculate this type of structures. Related Articles | Metrics

Select

Trial Discussion on the Study and Development of Our Highway Data-base System Li Shuqing, Luo Dequan 1993, 12(4): 67-72.  Abstract ( )   PDF (418KB) ( )   This paper has an introduction to the concept, design objective, function and technical characteristic of our highway data-base system, analyses and sums up the experience to the study and development of foreign highway data-base system, points out the tactics and principle to the study and development of highway data-base system suitable for our country condition. Finally, this paper has developed a connector and data interface for the data-base and its application system. Related Articles | Metrics

Select

The New Method of Calculation for Bird-shape and Folded Plate Structure Zhou Suiping, Li Kaixi, Cheng Yongcai 1993, 12(4): 73-83.  Abstract ( )   PDF (699KB) ( )   In this paper, based on the theory in ref.[3], the equilibrium condition for a single plate in bird-shape and folded plate structures is analyzed by means of the moment vector and from this the stress distribution for the bird-shape and folded plate structures with concentrated loads is obtained. The corresponding computer program and the tables for the stress coeficients arc made. Related Articles | Metrics

Select

Situation of Mechanical Movement & Machinery Match in full Construction Guo Xiaohong, Guo Jayin 1993, 12(4): 84-90.  Abstract ( )   PDF (403KB) ( )   This paper has made a further development and complement to the paper titled probability analysis of mechanical movement in a sort of full construction and constitutes the theoretical basis of matching main construction machinery in full construction. Related Articles | Metrics

Select

Application of Dynamic Programming Method in Deciding the best Leasing Plan for Construction Machinery Equipments Shi Jinfa, Hong Changyin 1993, 12(4): 91-98.  Abstract ( )   PDF (592KB) ( )   This paper summarizes the basic knowledge of the method of dynamic porgramming. And according to the basic principles of this method, it presents a new symboling method which can find the best leasing plan for construction machinery equipments. Meanwhile, the paper gives anapplied example and the concrete solving steps of this new (symboling) method. Related Articles | Metrics

Select

Dosibilitics for axial Channeling Radiation of Electrons as r-Laser Luo Shiyu, Shao Mingzhu 1993, 12(4): 99-104.  Abstract ( )   PDF (330KB) ( )   In this paper the characteristics of the spontaneous and interferntial rsdiations on the axial channel of a electron have been described, also the pendulum equation and the gain equation have been derived. Related Articles | Metrics

Select

The Solutions of Diophantine Congruence Equation x2n+(x+1)2n+…+(x+h)2n≡(x+h+1)2n(mod 17) (I) Zou Zhaonan, Chen Julin 1993, 12(4): 109-116.  Abstract ( )   PDF (415KB) ( )   In this paper, we have proved that for the diophantinc congruence equation x2n+(x+1)2n+…+(x+h)2n≡(x+h+1)2n (mod 17) there arc integer solutions if and only if (1) when n=1 (mod8), then h≢3, 4, 5, 6, 10, 11, 13 (mod 17); (2) when n≡2 (mod8), then h≢3, 4, 8, 9, 10, 14 (mod 17); (3) when n≡3 (mod8), then h≢6, 10, 11 (mod 17). Related Articles | Metrics