墨尔本西区地基沉降的问题

Stoneage

New houses on shaky ground
BY NICK TOSCANO AND DAN O'SULLIVAN
07 Dec, 2011 01:00 AM
NEW houses in Melbourne's west could be prone to severe building cracks because their foundations haven't been designed to cope with reactive soil, according to fresh legal claims.
Slater & Gordon is representing several homeowners in the north-western and western suburbs whose newly built houses are cracking and twisting.
Lawyer Robert Aurrichio blames a particular type of concrete slab foundation, known as a "waffle slab", claiming it's risky to use in the volatile soil conditions in the west.
"We've spoken to a number of experts who believe that [the waffle slab] needs to be designed with adequate drainage to cope with the variable nature of the soil in the western suburbs," he said.
Slater & Gordon client Noel Spooner says the foundations of his two-year-old Werribee home are breaking. His house is riddled with cracks in the plaster and cornices, and doors won't stay closed due to gaps emerging between door frame and jam. "I was peeved," Mr Spooner said. "Why did they not do the due diligence before building? It's ludicrous to just walk away and say it's bad luck, you're on reactive soil, and using that as a defence. These are people's life savings and their dream home could be uninhabitable."
Archicentre general manager David Hallett said waffle slabs had been widely used for more than a decade across Melbourne's western growth areas due to the high volume of new housing estates. "In suburbs like Caroline Springs, areas around Burnside, Tarneit, Werribee and Melton, the simple fact is that there's been thousands of these buildings built over the last decade and typically more and more have been with waffle slabs," he said.
But Mr Hallett disputed Slater & Gordon's claim that building cracking was related to a particular design of concrete slab foundation. He said foundations for any new building needed to be designed to suit the soil conditions of the site, as determined by soil tests, irrespective of whether they used waffle or flat slabs.
摘自www.wyndhamweekly.com.au
好像都是一些比较新的房子。打地基的时候没有考虑到土壤的变化。 造成一段时间以后地基沉降，房屋开裂。记得很早以前在point cook 看房， 有几家房子周围的散水和房子都脱离了， 可能是因为沉降。
[ 本帖最后由 stoneage 于 2011-12-9 16:46 编辑 ]

davidcheng

供未来建房的TX参考， 应该提前做准备工作。 别的好修， 地基难办。

Stoneage

又是point cook。。。。。

Insider

原帖由 Insider 于 2011-12-9 16:45 发表
又是point cook。。。。。
不光是PC, 西区。

Stoneage

原帖由 stoneage 于 2011-12-9 16:25 发表
New houses on shaky ground
BY NICK TOSCANO AND DAN O'SULLIVAN
07 Dec, 2011 01:00 AM
NEW houses in Melbourne's west could be prone to severe building cracks because their foundations haven't been desig ...好像都是一些比较新的房子。打地基的时候没有考虑到土壤的变化。 造成一段时间以后地基沉降，房屋开裂。
This is to do with the builder you choose, not to do with the soil in the west, the builder has to use a good foundation design according to the soil test results. If you choose a crap builder, the house will be crap no matter where you build.

citystop

是不是每个新房子都存在地基沉降问题，只不过是程度不同而已。从技术层面讲，如何避免地基沉降呢？

richiz

原帖由 richiz 于 2011-12-9 19:41 发表
是不是每个新房子都存在地基沉降问题，只不过是程度不同而已。从技术层面讲，如何避免地基沉降呢？
理论上每座新房都会沉降，但正常设计施工的房子沉降是在合理的范围之内的，或者说沉降很少，因此并不会影响房子的安全。
避免沉降：一是基础要坚实，虚土要挖掉。二是用钢筋水泥倒圈梁（中国此做法比较常见）或者整个基础地面倒水泥，主要是平衡建筑整体对地面的压力，避免局部沉降引起的墙面地面开裂。

zhijian_j

原帖由 zhijian_j 于 2011-12-10 00:23 发表
理论上每座新房都会沉降，但正常设计施工的房子沉降是在合理的范围之内的，或者说沉降很少，因此并不会影响房子的安全。
避免沉降：一是基础要坚实，虚土要挖掉。二是用钢筋水泥倒圈梁（中国此做法比较常见）或者整个基础地面倒水泥，主要是平衡建筑整体对地面的压力，避免局部沉降引起的墙面地面开裂。
说的都正确！
补充一点，沿着房屋边缘（一般是两侧）铺浇混凝土decking（一般1米宽），对房屋的基础的强度有帮助！

MingDeng

原帖由 davidcheng 于 2011-12-9 16:27 发表
新造房质量不如以前也是常见的。。。
看了很多新房，材料用的廉价不说，技术还差。。。
还用什么新材料来搪塞
更有刚造好就漏水严重的。
不提了
很多廉价材料用环保作幌子

jwa

难道土质报告有错误吗，工程师的责任？