| 摘要 |
A support structure (10) for providing internal vertical support within an underground water storage system. The support structure includes a column member (12), a foot spreader module (14) adapted for fitting to a lower end of the column member to support the column member in a substantially vertical orientation on an underlying surface, and a head spreader module (16) adapted for fitting to an upper end of the column member to support an overlying surface relative to said underlying surface. The column member with the foot and head spreader modules fitted thereto forms a column support for supporting a ground surface above the water storage system. The head spreader module and the foot spreader module are each formed of a modular unit common to both spreader modules. The column member is a load bearing member which vertically supports the head spreader module in spaced relationship to the foot spreader module. The modular unit is tapered outwardly to distribute load from the column member over an area greater than a cross-sectional area of the column member.
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