围护结构内的热交换管和结构的相互影响研究

地源热泵系统是对地温能进行利用的一种新型技术,其中在地下连续墙或钻孔灌注桩内埋设热交换管称为墙埋管和桩埋管。但是在地下连续墙或灌注桩中埋管是否会对其承载能力造成影响,以及地下连续墙或灌注桩的变形是否会对埋管产生影响分别是结构和暖通两个专业关心的问题。通过地下连续墙和灌注桩埋管前后的截面面积和惯性矩的变化,分析了埋管对其承载能力的影响。根据围护结构的结构特点以及允许位移,分析了围护结构的变形对埋管的影响。同时还研究了在地源热泵运营时,防冻液渗入混凝土可能引起的对围护结构的影响及其避免措施,研究结果表明,围护结构内埋管对其承载能力的影响相当小,围护结构的变形也不会影响热交换管的正常使用。

Research on Mutual Influence between the Enclosure Structures and the Heat Exchange Pipes in Enclosure Structures

As a new kind of building energy saving technology which makes use of geothermal energy,the ground-source heat pump comprises the heat exchange pipes buried in the diaphragm walls or in cast-in-situ bored piles which are called energy walls and energy piles respectively.But both the heating and ventilating discipline and the structure discipline are caring for two aspects: whether the pipes will influence the bearing capacity of the enclosure structure and whether the deformations of the enclosure structure will influence the buried pipes.The bearing capacity influenced by the buried pipes is analyzed through the variation of the moment of inertia and the area of the diaphragm wall and the bored pile.The buried pipes influenced by the enclosure structure are studied according to the characteristics of the enclosure structures and the allowable displacements.It is also discussed that the antifreezing fluid penetrating the concrete will have an effect on the enclosure structure when the heat pump system is in operation,and the solutions to the prevention measures are presented.The results show that the buried pipes in the enclosure structure have little influence on the structures and the deformations of the enclosure structures will not affect the normal use of the heat exchange pipes.