樁基礎生命周期能源消耗及環(huán)境影響評價
發(fā)布時間：2018-08-09 14:16
【摘要】：建筑的能源使用在我國能源消耗中所占比重很大,與此帶來的環(huán)境問題也非常嚴重。但隨著近幾年人們環(huán)保意識的增強和相關政策的不斷出臺,越來越多研究者開始著手研究建筑相關的節(jié)能減排措施,國內節(jié)能減排工作也確實取得了一定的成效。然而,國內大多研究者對建筑節(jié)能的研究僅僅停留在建筑使用時間段內,而往往忽略了廣義上的建筑節(jié)能。盡管使用階段的節(jié)能仍然是建筑全生命周期節(jié)能的主要環(huán)節(jié),不容置疑,但其他階段的節(jié)能減排措施也不容忽視。因此,從其他階段研究建筑節(jié)能措施將會成為今后的一大發(fā)展趨勢。而樁基礎作為現(xiàn)代建筑中最為重要的基礎形式之一,必將會受到廣泛的研究。 本研究在剖析我國面臨的能源和環(huán)境挑戰(zhàn)的基礎上,將生命周期理論應用于樁基礎能耗和環(huán)境影響評價中,建立了能耗和二氧化碳排放量計算模型,并運用所建立模型對十余個混凝土灌注樁和預應力管樁的工程實例進行分析,得出：預制管樁的單位能耗約在1343.2kJ/kN-m,單位C02排放量約在175.6g/kN-m;而鉆孔灌注樁的單位能耗約在1188.4kJ/kN-m,單位C02排放量約在134.9g/kN-m.此外,樁基礎的材料生產(chǎn)階段能耗所占比例最大,鉆孔灌注樁約為總能耗的68.4%,預應力管樁則達到了79.3%。建立PC,PHC等多個標準型號的管樁能耗和二氧化碳排放量表,并在其基礎上得出相應的估算公式。 通過實例所反映出來的不同樁型能耗和二氧化碳排放量之間的差異,可以為設計人員在樁型選擇上提供一個參考,并為今后改進樁基礎施工方法提供思路。研究中所提到的基本材料能耗和二氧化碳排放量計算方法,也可為各類基礎材料或基本構件的能耗計算提供一個借鑒,從而更加科學合理地對目標進行評價。
[Abstract]:The energy use of buildings accounts for a large proportion of energy consumption in China, and the environmental problems caused by it are also very serious. However, with the enhancement of people's environmental awareness and the introduction of related policies in recent years, more and more researchers have begun to study energy conservation and emission reduction measures related to buildings, and domestic energy conservation and emission reduction work has indeed achieved certain results. However, most domestic researchers only focus on the study of building energy efficiency, and often ignore the broad sense of building energy saving. Although the energy saving in the use stage is still the main link in the whole life cycle of the building, there is no doubt that the energy saving and emission reduction measures in other stages should not be ignored. Therefore, the study of building energy conservation measures from other stages will become a major development trend in the future. As one of the most important foundation forms in modern architecture, pile foundation will be widely studied. Based on the analysis of the energy and environmental challenges faced by China, the life cycle theory is applied to the energy consumption and environmental impact assessment of pile foundation, and a calculation model of energy consumption and carbon dioxide emissions is established. The engineering examples of more than ten concrete cast-in-place piles and prestressed pipe piles are analyzed by using the established model. The results show that the unit energy consumption of prefabricated pile is about 1343.2kJ / kN-mand the unit CO2 emission is about 175.6g / kN-m.The unit energy consumption of bored pile is about 1188.4kJ / kN-mand the emission of CO2 is 134.9gkkN-m. In addition, the proportion of energy consumption in the material production stage of pile foundation is the largest, the bored pile is about 68.4% of the total energy consumption, and the prestressed pipe pile is 79.3%. The energy consumption and carbon dioxide emission table of several standard models such as PC-PHC are established, and the corresponding estimation formulas are obtained on the basis of these tables. The difference of energy consumption and carbon dioxide emission between different pile types reflected by examples can provide a reference for designers to select pile type and provide ideas for improving the construction method of pile foundation in the future. The energy consumption of basic materials and the calculation method of carbon dioxide emissions mentioned in the study can also provide a reference for the calculation of energy consumption of all kinds of basic materials or basic components, so as to evaluate the target more scientifically and reasonably.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU473.1;TU-023
本文編號：2174339
[Abstract]:The energy use of buildings accounts for a large proportion of energy consumption in China, and the environmental problems caused by it are also very serious. However, with the enhancement of people's environmental awareness and the introduction of related policies in recent years, more and more researchers have begun to study energy conservation and emission reduction measures related to buildings, and domestic energy conservation and emission reduction work has indeed achieved certain results. However, most domestic researchers only focus on the study of building energy efficiency, and often ignore the broad sense of building energy saving. Although the energy saving in the use stage is still the main link in the whole life cycle of the building, there is no doubt that the energy saving and emission reduction measures in other stages should not be ignored. Therefore, the study of building energy conservation measures from other stages will become a major development trend in the future. As one of the most important foundation forms in modern architecture, pile foundation will be widely studied. Based on the analysis of the energy and environmental challenges faced by China, the life cycle theory is applied to the energy consumption and environmental impact assessment of pile foundation, and a calculation model of energy consumption and carbon dioxide emissions is established. The engineering examples of more than ten concrete cast-in-place piles and prestressed pipe piles are analyzed by using the established model. The results show that the unit energy consumption of prefabricated pile is about 1343.2kJ / kN-mand the unit CO2 emission is about 175.6g / kN-m.The unit energy consumption of bored pile is about 1188.4kJ / kN-mand the emission of CO2 is 134.9gkkN-m. In addition, the proportion of energy consumption in the material production stage of pile foundation is the largest, the bored pile is about 68.4% of the total energy consumption, and the prestressed pipe pile is 79.3%. The energy consumption and carbon dioxide emission table of several standard models such as PC-PHC are established, and the corresponding estimation formulas are obtained on the basis of these tables. The difference of energy consumption and carbon dioxide emission between different pile types reflected by examples can provide a reference for designers to select pile type and provide ideas for improving the construction method of pile foundation in the future. The energy consumption of basic materials and the calculation method of carbon dioxide emissions mentioned in the study can also provide a reference for the calculation of energy consumption of all kinds of basic materials or basic components, so as to evaluate the target more scientifically and reasonably.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU473.1;TU-023
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