48＋80＋48 m铁路连续梁悬灌段施工工艺探讨

某特大桥651#～654#墩梁型为48＋80＋48 m 连续梁,梁全长为177.5 m,梁体砼等级为C50。本文详细叙述了48＋80＋48 m连续梁悬浇段施工方法。     

渝利线青石岩双线大桥(48+80+48)m连续梁桥设计

以渝利线青石岩双线大桥(48+80+48)m预应力混凝土连续梁桥为例,介绍了连续梁的结构设计,分析计算了高墩大跨连续梁的静力特性。计算结果表明:桥梁设计均满足规范要求。     

钱东特大桥80+120+80m连续梁0#块支架结构计算

钱东特大桥主跨采用80+12+80m连续梁结构,本文通过对连续梁0#块支架结构的设计进行了简要介绍,重点对支架结构的计算进行了详细研究,总结出了一套完整的0#块支架结构计算方法,对以后的类似工程的检算提供了宝贵的借鉴经验。     

东京殿大桥连续梁预应力施工质量控制

介绍了东京殿大桥8#～11#墩48+80+48m连续梁预应力施工中从管道埋设、预应力钢筋的布置到施加预应力全过程的质量控制要点,对类似工程具有一定的参考意义。     

城际铁路固安特大桥(32+48+32) m连续梁施工技术研究

特大桥连续梁施工具有施工工期短、工艺较为复杂等特点,因此必须结合项目的实际情况对工程的质量与安全进行有针对性的控制。以城际铁路固安特大桥(32+48+32)m连续梁施工为例,深入地介绍了特大桥连续梁施工工艺要点,希望为提高相应工程的质量提供技术参考。     

(32+48+32)m支架现浇连续梁支架及模板施工要点

本文介绍了新建吉林至珲春铁路工程第二松花江特大桥32+48+32m支架现浇连续梁支架及模板施工要点,对支架及模板施工过程中的施工方法进行了较为详细的阐述。     

祯埠特大桥深水基础钢板桩围堰设计

金华至温州扩能改造工程祯埠特大桥(48+4×80+48)m连续梁主墩9~13#墩均位于瓯江上游支流大溪河中,河床处地质主要为大块粒砂卵石。重点介绍了主墩深水基础采用钢板桩围堰设计,以供今后类似地质条件下深水基础工程施工提供借鉴和参考。     

黄沙泉大桥钢吊箱围堰施工技术

黄沙泉大桥为新建黔江至张家界至常德铁路跨越黄沙泉水库库区的一座双线铁路桥,采用(48+80+48)m连续梁跨越,连续梁两主墩均位于水库中,其中3#主墩位于水库中央深水区,设计为高桩承台。文章结合该桥实际情况,介绍了高桩承台单壁钢吊箱方形围堰墩位处拼装,千斤顶落顶下放,整体封底的实用施工技术,为同类桥梁的施工提供参考。     

连续梁悬臂浇筑施工0#块支架模板设计

本文结合沪杭客专四标段跨A7高速公路48+80+48米悬臂浇筑连续梁,对0#块支架模板进行设计检算。     

高速铁路大跨度连续梁体系转换施工技术研究

高速铁路大跨度连续梁体系转换施工技术是一项非常重要的技术,必须要保证施工质量和施工安全。以跨龙丽温高速特大桥(48+3×80+48)m连续梁为例,其按着先边跨后中跨最后次中跨的顺序,采用了外劲性骨架加临时预应力索的方式来进行合龙口锁定的方案,以此来形成整体连续的桥梁。通过对跨龙丽温高速特大桥(48+3×80+48)m的连续梁施工技术进行研究,可为其他高速铁路大跨度连续梁体系转换施工提供参考。     

净高≤15m、孔跨(48+80+48)m连续梁门洞式支架法施工方案的应用

在城市桥梁建设方案中,为了实现大跨度连续梁的设计意图,承建方根据建设项目的具体情况需要选定经济适用的施工方案。文章就连续梁门洞式支架法施工方案的选定和做法进行探讨。     

跨茄兰江(32+48+32)m现浇梁支架检算与施工

根据(32+48+32)m现浇梁支架的工程概况及相关规范,进行了现浇简支梁支架验算,并对支架的施工与预压作了阐述,积累了相关经验,为今后类似现浇箱梁支架的验算与施工提供指导。     

海城地震48小时

<正>1974年1月,我到辽宁省地震办公室(辽宁省地震局前身)报到参加工作,当时被安排在业务组。那时省级地震办公室业务组是业务综合部门,负责地震分析预报、震害防御、科学研究、情报资料、震情值班等几乎全部业务工作。正是因为工作在这个组,才使我有更多的机会参与海城地震的监测预报工作。回顾海城地震,从2月3日18点38分震中区发生第一次有感地震到震后2月5日19点左右我到达地震现场,这是令我     

Index to Volume 48

Abstract

An Agenda for the 199Os?: The Mean Season: The Attack on the Welfare StateFred Block, Richard Cloward, Barbara Ehrenreich, and Frances Fox Piven. Pantheon Books, New York, 1987. 205 pp. $8.95 (paperback).

Planning and Its Subfields: Intergovernmental Mediation: Negotiation in local Government DisputesRoger Richman; Orion F. White, Jr.; and Michaux H. Wilkinson. Westview Special Studies in Peace, Conflict, and Conflict Resolution. Westview Press, Boulder, CO,1986. 173 pp. $18.50 (paperback).

Breaking the Rules: Bureaucracy and Reform in Public HousingJon Pynoos. Plenum, New York, 1986. 221 pp. $29.50

Rachel and Her Children: Homeless Families in AmericaJonathan Kozol. Crown Publishers, New York, 1988. 261 pp. $16.95.

Keep Out: The Struggle for land Use ControlSidney Plotkin. University of California Press, Berkeley,1987. 360 pp. $45.00 (cloth), $12.95 (paperback).

Mastering Change: Winning Strategies for Effective City PlanningBruce W. McClendon and Ray Quay. Planners Press, American Planning Association, Chicago, 1988. 282 pp. $39.95 (cloth), $21.95 (paperback).

Regions: The Economics and Politics of TerritoryAnn R. Markusen. Rowman and Littlefield, Totowa, NJ, 1986. 304 pp. $37.50.

Impacts of Hazardous Technology: The Psycho-social Effects of Restarting TMI-1John Sorensen, Jon Soderstrom, Emily Copenhaver, Sam Carnes, and Robert Bolin. State University of New York Press, Albany, 1987. 233 pp. $39.50 (cloth), $12.95 (paperback).

Hazardous Materials, Hazardous Waste: Local Management OptionsRaymond D. Scanlon, editor. International City Management Association, Washington, 1987. 223 pp. $21.00 (paperback).

Enforcing Pollution Control LawsClifford S. Russell, Winston Harrington, and William J. Vaughan. Resources for the Future, Washington, 1986. 231 pp. $25.00.

Building the American Highway System: Engineers as PolicymakersBruce E. Seely. Temple University Press, Philadelphia, 1987. 315 pp. $32.95.

New Communities for Urban Squatters: Lessons from the Plan that Failed in Dhaka, BangladeshCharles Choguill. Plenum Press, New York, 1987. 213 pp. $39.50.

Underdevelopment is a State of Mind: The Latin American CaseLawrence E. Harrison. Madison Books, Lanham, MD, 1985. 210 pp. $20.00 (cloth), $9.95 (paperback).

Los Angeles and the Automobile: The Making of the Modern CityScott L. Bottles. University of California Press, Berkeley, 1987. 302 pp. $25.00.

Divided Neighborhoods: Changing Patterns of Racial SegregationGary A. Tobin, editor. Sage, Newbury Park, CA, 1987. 284 pp. $29.92 (cloth), $14.95 (paperback).

The Politics of Urban DevelopmentClarence N. Stone and Heywood T. Sanders, editors. University Press of Kansas, Lawrence, 1987. 312 pp. $29.95 (cloth), $12.95 (paperback).

Bourgeois Utopias, The Rise and Fall of SuburbiaRobert Fishman. Basic Books, New York, 1987. 241 pp. $19.95.

Creating Architectural Theory: The Role of the Behavioral Sciences in Environmental DesignJon Lang. Van Nostrand Reinhold, New York, 1987. 278 pp. $34.95 (paperback).

Law in Urban Design and Planning: The Invisible Webchard Tseng-yu Lai. Van Nostrand Reinhold, New York, 1988. 470 pp. $43.95.

Migrants in Europe: The Role of Family, Labor, and PoliticsHans Christian Buechler and Judith-Maria Buechler, editors. Contributions in Family Studies, no. 12. Greenwood Press, Westport, CT, 1987. 319 pp. $55.00.

Briefly Noted: Theory and Practice of Community Social WorkSamuel H. Taylor and Robert W. Roberts, editors. Columbia University Press, New York, 1985. $22.50.

People, Cities and Wealth: The Transformation of Traditional SocietyE. A. Wrigley. Basil Blackwell, London and New York, 1987. 348 pp. $49.95.

Communities on the Way: Rebuilding Local Economies in the United States and CanadaStewart E. Perry. State University of New York Press, Albany, 1987. 254 pp. $44.50 (cloth), $14.95 (paperback).

The Oberlin Book of BandstandsS. Frederick Starr, editor. Preservation Press, Washington, 1986. 100 pp. $14.95 (paperback).

American Community Organizations: A Historical Dictionary Patricia Mooney Melvin, editor. Greenwood Press, West-port, CT, 1986. 233 pp. $45.00.

Capitalist World Development: A Critique of Radical Development Geography Stuart Corbridge. Rowman &; Littlefield, Totowa, NJ, 1986. 295 pp. $14.50 (paperback).     

布赖滕巴赫景观酒店48° Nord

<正>位于法国布赖滕巴赫(Breitenbach)的景观酒店"48° Nord"从斯堪的纳维亚传统中汲取灵感,同时以当地美食、健康疗养和自然环境为基础,为旅客们带来阿尔萨斯地区真正意义上的全方位生态旅行体验。48°Nord景观酒店坐落于布赖滕巴赫的阿尔萨斯村庄高地上,它重新解读了斯堪的纳维亚的传统小屋"hytte"的建筑形式,并为客人们带来一处链接自然的避世之地。项目坐落于一个自然保护区的中心,其设计旨在在不造成任何干扰的前提下与自然环境共融。     

48V直流接地的分析与探讨

分析了秦山核电三厂48V直流不间断电源系统出现接地的影响,通过对比目前主流的接地查找方式以及梳理秦山第三核电厂目前采用的接地查找操作,识别出目前操作中容易失误的薄弱环节,并给予针对性的改进建议。