JP2013189784A5 - - Google Patents

Description

When installing a solar cell module or solar cell array to be used in a photovoltaic power generation system, for example, a concrete base is constructed by placing concrete in advance at a planned installation location, and the concrete base is used for the solar cell module or solar cell array. The foundation structure that fixes the legs of the gantry (superstructure) is generally adopted, but the foundation work for placing concrete in the planned installation location and the gantry (superstructure) on the foundation of the cast concrete of the legs is necessary to work and to fix the, it takes a long construction time, construction cost increases.

The direction in which the misalignment occurs is not constant and varies, and the misalignment amount is also various. For this reason, it is difficult to directly connect the leg portion 11 of the gantry 10 (see FIG. 15) to the steel pipe pile 20.

Connecting structure of the present invention, which as diverse as misalignment connects the legs 11 of the gantry 10 in without any problem pile head 21a also be present (superstructure) causes a troublesome adjustment operation It can be connected without connecting.

As shown in FIGS. 1 and 2, the connection structure M of the present embodiment includes a torque transmission fitting 24 that is fixed in advance in a cylindrical pile head 21 a at the upper end of the steel pipe pile 20 (pile main body 21) by welding or the like. Is used. A hexagonal nut 25 is fixed to the center of the upper surface of the torque transmission fitting 24 as shown in FIG. Instead of the hexagon nut 25, a torque transmission fitting 24a provided with a screw hole 25a as shown in FIG. 7B may be used.

The connection structure M extends along the central axis of the steel pipe pile 20 (pile main body 21) by screwing the lower end portion into the hexagon nut 25, and the upper end portion (head 30a) protrudes from the pile head 21a. The cross section has a connecting shaft 30 made of a bolt, a horizontal piece portion 32 provided with a loose hole 31 for adjusting misalignment into which the connecting shaft 30 is inserted, and a vertical piece portion 34 attached to the leg portion 11 of the gantry 10. An intermediate having an L-shaped adjustment fitting (hereinafter referred to as an L-shaped adjustment fitting) 35 and a through-hole 36 which is disposed between the pile head 21a and the horizontal piece 32 and through which the connecting shaft 30 passes. A metal fitting 37 and a holding member 40 provided on the L-shaped adjustment metal fitting 35 so as to cover the loose adjustment hole 31 for adjusting the misalignment and provided with a misalignment adjusting long hole 41 into which the connecting shaft 30 is inserted. It is prepared for. The vertical piece 34 that is attached to the leg 11 of the gantry 10 of the L-shaped adjustment fitting 35 is provided with an attachment adjustment long hole 33 (see FIG. 3) that can adjust the attachment position of the leg 11.

As shown in FIGS. 3 and 4 (a), the misalignment adjusting loose hole 31 provided in the horizontal piece 32 of the L-shaped adjustment fitting 35 is a circular shape having an inner diameter slightly smaller than the inner diameter of the pile head 21a. It is a hole. The length of one side as shown in FIG. 4 (b) may be slightly shorter square rectangular hole 31a than the inner diameter of the pile cap 21a. As shown in FIG. 3, the attachment adjustment long hole 33 provided in the vertical piece portion 34 of the L-shaped adjustment metal fitting 35 is provided along the short side direction of the vertical piece portion 34, and the vertical piece portion 34. Some of them are provided along the long side direction. The misalignment adjusting loose hole 31 and the attachment adjusting long hole 33 are set so that the steel pipe pile 20 can cope with the embedding caused by the misalignment in the front / rear / left / right direction or the up / down direction from the planned embedding position. It is.

Thereby, even if it is a case where the steel pipe pile 20 raise | generates misalignment etc. and is embed | buried, the leg part 11 of the mount frame 10 can be connected to the pile head 21a of the steel pipe pile 20 without any trouble. The steel pipe pile 20 once buried in the ground sinks into the ground and is not pulled out from the ground even if a load or a pulling force is applied by a spiral blade 22 (see FIG. 9) or the like. Therefore, even if wind pressure or the like acts on the solar cell module or solar cell array S (see FIG. 15), there is no possibility that the gantry 10 (leg 11) will be lifted from the ground, and the solar cell module or solar cell array S or gantry 10 leg 11 by its own weight, such as there is no risk of subsidence in the ground.

10 frame (superstructure)
11 leg 20 steel pipe pile (pile)
21a Pile head 24 Torque transmission fitting 24a Torque transmission fitting 25 Hexagon nut 25a Screw hole 30 Connection shaft 30a Head 31 Loose hole for misalignment adjustment 32 Horizontal piece 33 Mounting adjustment slot 34 Vertical piece 35 L-shaped adjustment fitting 36 Through hole 37 Intermediate bracket 40 Holding member 41 Long hole for adjusting misalignment 60 Shim (height adjusting member)