【正文】 ight state that in general HSC will be used in tall buildings as chimneys, TV towers, and in tall public buildings. For the last group of structures an interesting analysis 西安石油大學(xué) 本科 畢業(yè)設(shè)計(jì) （論文） was made in [11]. It is interesting to note that the old idea of reinforcement made from high strength prestressed concrete is ing back [12]. The experiments performed with reinforcement presented in Fig. 3 prove advantages of such solutions. Fig. 3 Crosssection of the prestressed bar[12] Table 2 The tallest concrete structures in the world Table 2 gives a collection of tall concrete structures and propositions for the construction of millennium tall buildings for the year 2022, where HSC may be used [13]. Building Location Height(m) Year of pletion Twin Towers Kuala Lumpur 450 1996 Central Plaza Hongkong 374 1992 311South Wacher Drive Chicago 292 1989 Water Tower Place Chicago 262 1976 Messeturn Frankfurt 253 1990 Cityspire New York 248 1988 Rialto Centre Melboume 243 1987 Proposed millennium tower and skyscrapers London Millennium Centre London 376 Shanghai Financial Centre Shanghai 460 New York Sock Exchange Tower New York 546 Bombay Millennium Tower Bombay 560 Tokyo Millennium Tower Tokyo 840 Gibraltar CrossingPylon SpainMorocco 1350 西安石油大學(xué) 本科 畢業(yè)設(shè)計(jì) （論文） The presen tstate in technological research in the area of new generation concrete is not yet finished. New improvements or even pletely new concepts are expected. Simultaneously, the need of formal order in the field of new types of cementbased concrete is noticed. The example on Utilisation of High Strength/High Performance Concrete (Norway, 1999). In the urgent need for standardisation of at least European scale (Eurocode, country standards) the problem of new generation concrete design is present. This problem appears also when the methodology of laboratory and in situ tests of materials and construction are concerned. References [1],Estimate of a prestressing force in the prestressed concrete Pipes type Betras, in: XVI Sympozjum mechaniki ciala stalego, Warszawa, 1994 (in Polish). [2], Experimental verification of plane stress concrete FE models beams and shells, in: Proceedings of International Conference EuroC1998, Badgastein, Austria, 1998. [3],High performance concrete: exploring a new material, Struct. Eng. Int. 3 (1995) 182188. [4]DafStb: Richtlinie fur hochfesten Beton. DafStb, Berlin, 1995. [5]Reactive power concrete (RPC), HDR Engineering Inc., March 1995. [6], , Ductility of beams and columns made of HSC/HPC, Darmstadt Concrete 9 (1994) 2940. [7]J. Walraven, High strength concrete: a structural material for the future? FIP Notes, Vol. 4, 1994. [8]K. Pfeffer, M. SchnellenbachHeld, High performance lightweight concrete. State of standard and present application, Darmstadt Concrete 12 (1997) 8189. [9], Cantilever system of concrete placingbase technology for bridges of length spans, Inz199。ynieria I Budownictwo, Vol. 4, Warsaw, 1998 (in Polish). [10]P. Richard, M. Cheyrezy, J. Dugat, Pretensioned beam without conventiona lreinforcing, FIP Notes, Vol. 1, 1995. [11]G. Ko200。nig, A. Berneiser, Limit to heights for tall buildings using high strength concrete, Darmstadt Concrete 11 (1996) 2944. [12]G. Ko200。nig, A. Menner, A. Pesch, High strength mortar for prestressed concrete bars, Darmstadt Concrete 11 (1996) 4548. 西安石油大學(xué) 本科 畢業(yè)設(shè)計(jì) （論文） [13]A. Kmita, Building structures from high strength concrete in near future, in: Challenges to Civil and Mechanical Engineering in 2022 and Beyond, Proceedings ofInternational Conference, Vol. 3, Wroc248。aw, 1997. 西安石油大學(xué) 本科 畢業(yè)設(shè)計(jì) （論文） 指導(dǎo)教師意見： 指導(dǎo)教師簽字： 年 月 日 系 (教研室 )意見： 主任簽字： 年 月 日 西安石油大學(xué) 本科 畢業(yè)設(shè)計(jì) （論文）