DL/T5198－2004 水电水利工程岩壁梁施工规程

2009-3  

中国电力出版社  

中华人民共和国国家发展和改革委员会发布  

18  

17000  

Foreword This standard iS established according to the requirement of Notice on Confirming the Plan Project to Establish and Revise the PowerIndustrial Standards in 1999，with the reference No．22 Power(2000).the paper issued by the former Power Department of State Economic and Trade Commission. The crane girder anchored to rock wall is called as anchored girder for short，which is the supporting structure for the heavy bridge cranes and is suitable for underground powerhouse，main transformer chamber,tailrace gate chamber and caverns for other purposes in hydropower station.The anchored girder is different from the crane girder supposed on the horizontal rock bench or on the reinforced concrete column.The anchored girder is a kind of load-bearing structures and bears the load by two groups of tensile anchor rods and a group of compressive anchor rods to anchor the reinforced concrete girder on the incfined rock face.In 1980s，the anchored girder then already applied more widely in the North European countries，such as Norway,was introduced into the underground powerhouse of Lubuge Hydropower Station in China.Afterwards it was successfully used in the underground powerhouses of Guangzhou Pumped Storage Power Station(Phase I and Phase II)，Tianhuangping Pumped Storage Power Station，as well as Xiaolangdi，Dachaoshan and Mianhuatan Hydropower Stations and SO on.The anchored girder has advantages such as economy,reliability,easier construction，speed up construction progress，reduction of powerhouse span and advanced service etc.At present，this new technology has been applied widely in China.

　　为了规范岩壁梁的施工,保证工程质量与安全,特制定了本标准.本标准规定了地下洞室岩壁梁部位开挖方法、岩壁梁锚杆和岩壁梁钢筋混凝土施工，以及对岩壁梁的保护、载荷试验和观测方法等。

Foreword1 Scope2 Normative References3 General4 Excavation of Anchored Girder Area5 Construction of Anchor Rods in Anchored Girder6 Concrete Construction for Anchored Girder7 Protection and Monitoring for Anchored Girder8 Load Test and Monitoring for Anchored GirderAppendix A (Informative Appendix) Determination of Excavation Elevation of Plane for Layer of Anchored GirderAppendix B (Informative Appendix) Excavation of Protective Layer for Anchored GirderAppendix C (Normative Appendix) Adjustment Calculation of Hole Positions for Anchor Rods of Anchored Girder

8.0.1 The aim of load test for anchored girder is to checkthe bearing capacity and construction quality.The test includes static load test and dynamic load test.8.0.2 Before the load test of rock wall,the test outline shall be worked out.Its contents include the grade of static and dynamic loads,test method,the layout of observation cross sections and instruments,the alarming and control values of instruments,data records and dataanalysis,etc.8.0.3 The load test of anchored girder and the load test of bridgecrane shall be carried out simultaneously and the load grades may bedetermined according to the test requirement of the bridge came ordesign requirement.8.0.4 Before test,the embedded instruments shall be checked toconfirm they are in normal operation condition.8.0.5 When conducting the load test of anchored girder,reliablecommunication shall be available among the observer commandpersonandtheoperatorofthebridge crane.8.0.6 During load test of anchored girder,the test shall be stoppedwhen the observation values of the stress meters,displacement metersand multi-point displacement meters reach or exceed the correspondingalarming and control values,and the test Can be continued only afterthe reasons have been ascertained and proper measures have beentaken.8.0.7 During load test of anchored girder,blasting shall not be.

《DL/T 5198-2004水电水利工程岩壁梁施工规程(英文版)》由中国电力出版社出版。

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