拱坝坝后电梯井结构与坝体连接方式的研究
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摘要
随着我国拱坝建设水平的发展,坝体增设电梯井结构在工程中得到越来越多的运用。电梯井结构可以布置在坝内、坝外或者坝内外相结合布置,电梯井结构的布置要求尽量不恶化坝体应力,又要满足交通运输等。由于拱坝坝身较薄,电梯井不宜修建在坝体内部,一般都布置在坝后,那么,电梯井结构与坝体采取不同的连接方式,以及每种连接方式在不同工况下对电梯井结构的应力应变影响也是不同的；同时,由于我国水资源主要集中在西部高地震烈度区,因此,混凝土坝的抗震安全成为这些大坝工程设计中的关键技术问题。由于目前国内外对坝上附属结构的抗震性能及抗震研究方法的研究尚少,在实际工程中,不同类型的附属结构,地震时的反应有很大的差异,因此对这些问题的研究受到设计人员的关注。本文针对上述几个方面的内容进行了如下三方面的工作：
首先结合实际工程资料,拟定拱坝坝体及拱坝带电梯井结构型式研究的相关参数,并建立相应的计算模型。
其次,拱坝坝体与电梯井结构在坝体顶部采用固端连接,电梯井底部与坝体采用不同回填高程的连接方式时,对比分析不同连接高程的连接方式对电梯井自身结构及坝体结构应力应变的影响规律。
第三,研究电梯井与坝体在底部连接高程确定的情况下,电梯井结构在顶部采取不同连接方式时,分析坝顶不同的连接方式对电梯井自身结构及坝体结构的影响规律。
本文基于拱坝电梯井结构与坝体不同连接方式的布置及其结构型式研究所得成果,对相关工程设计有一定的借鉴意义,同时有助于电梯井结构布置问题的进一步研究。
With the level of China's dam construction's development, an additional elevator shaft structure in the project is to be more and more use. Elevator shaft structure can be arranged in the dam, the dam or the dam outside the combination of internal and external layout, as far as possible without aggravating the dams stress, but also to meet the transportation requirements. As the arch dam body is thinner, and elevator shafts should not be built on the dam within the generally deployed in behind the dam, so the elevator shaft structure of the dam is to be take a different connection method, and each connection conditions in the different conditions under the elevator. Well the structure of the impact of stress and strain is different; the same time, China's water resources mainly in the western area of high seismic intensity, therefore, the seismic safety of concrete dams to become the dam engineering design of the key technical issues. As the subsidiary structure at home and abroad on the dam seismic performance and seismic design method of the study was small, in practical engineering, the different types of subsidiary structure in response to an earthquake is very different, so take the elevator shaft structure of the dam seismic response analysis, etc. These issues are subject to staff in the design and construction of hydraulic concerns. In this paper, several aspects of the content of the above-mentioned the following three areas:
First of all, base on actual project data, development of arch dam and the dam with a study of the elevator shaft structure type parameters and establish the corresponding computational model.
Second, the arch dam and the dam at the top of the elevator shaft structure by solid-side connection, elevator shaft at the bottom and the height of the dam filling connections using different methods, the comparative analysis of the different elevation of the connection method to connect to the elevator shaft structure and the dam itself structure stress and strain were investigated.
Third, the study of the elevator shaft at the bottom of the connection with the dam height to determine the circumstances, the elevator shaft structure at the top to take a different link methods, the analysis of different connections to the top of the dam elevator shaft its structure and the dam structure were investigated.
Based on arch dam elevator shaft structure and layout of the different connections and the structure type of studies, the results of the relevant engineering design has some referential significance, while helping to lift shaft structure, layout issues for further study.Based on arch dam elevator shaft structure and layout of the different connections and the structure type of studies, the results of the relevant engineering design has some referential significance, while helping to lift shaft structure and layout issues for further study.
首先结合实际工程资料,拟定拱坝坝体及拱坝带电梯井结构型式研究的相关参数,并建立相应的计算模型。
其次,拱坝坝体与电梯井结构在坝体顶部采用固端连接,电梯井底部与坝体采用不同回填高程的连接方式时,对比分析不同连接高程的连接方式对电梯井自身结构及坝体结构应力应变的影响规律。
第三,研究电梯井与坝体在底部连接高程确定的情况下,电梯井结构在顶部采取不同连接方式时,分析坝顶不同的连接方式对电梯井自身结构及坝体结构的影响规律。
本文基于拱坝电梯井结构与坝体不同连接方式的布置及其结构型式研究所得成果,对相关工程设计有一定的借鉴意义,同时有助于电梯井结构布置问题的进一步研究。
With the level of China's dam construction's development, an additional elevator shaft structure in the project is to be more and more use. Elevator shaft structure can be arranged in the dam, the dam or the dam outside the combination of internal and external layout, as far as possible without aggravating the dams stress, but also to meet the transportation requirements. As the arch dam body is thinner, and elevator shafts should not be built on the dam within the generally deployed in behind the dam, so the elevator shaft structure of the dam is to be take a different connection method, and each connection conditions in the different conditions under the elevator. Well the structure of the impact of stress and strain is different; the same time, China's water resources mainly in the western area of high seismic intensity, therefore, the seismic safety of concrete dams to become the dam engineering design of the key technical issues. As the subsidiary structure at home and abroad on the dam seismic performance and seismic design method of the study was small, in practical engineering, the different types of subsidiary structure in response to an earthquake is very different, so take the elevator shaft structure of the dam seismic response analysis, etc. These issues are subject to staff in the design and construction of hydraulic concerns. In this paper, several aspects of the content of the above-mentioned the following three areas:
First of all, base on actual project data, development of arch dam and the dam with a study of the elevator shaft structure type parameters and establish the corresponding computational model.
Second, the arch dam and the dam at the top of the elevator shaft structure by solid-side connection, elevator shaft at the bottom and the height of the dam filling connections using different methods, the comparative analysis of the different elevation of the connection method to connect to the elevator shaft structure and the dam itself structure stress and strain were investigated.
Third, the study of the elevator shaft at the bottom of the connection with the dam height to determine the circumstances, the elevator shaft structure at the top to take a different link methods, the analysis of different connections to the top of the dam elevator shaft its structure and the dam structure were investigated.
Based on arch dam elevator shaft structure and layout of the different connections and the structure type of studies, the results of the relevant engineering design has some referential significance, while helping to lift shaft structure, layout issues for further study.Based on arch dam elevator shaft structure and layout of the different connections and the structure type of studies, the results of the relevant engineering design has some referential significance, while helping to lift shaft structure and layout issues for further study.
引文
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