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    November 01

    嘉定古城墙砌法

     Image0169嘉定古城墙,乍一看砖的组砌方式很可疑。后来一想,作为城墙,长度方向的标高可以随高就低,这种砌法最简便,只要下面的基座基本协调就可以了。而城墙主要受到平面外推力,这种砌法也可以,是横向的咬合。

    不存在转角问题,因为不是方城。

    Image0170

    基座石和砖体之间,不大规则石块的过渡,不大理解。也许还是标高协调的作用。

    另一个,考虑沉降在长度上的不均匀,这样的组砌方式也能适应,即在纵向是柔性的。

    Comments (8)

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    Yee L.wrote:
    谢谢城思老师的说明,很有启发。
    Nov. 10
    像古代这种城市图,更多层面属于一种“意向图”,很接近于后来凯文林奇所指的“意向地图”。不求比例准确,而是着力突出重点要素,这样反而更清晰地展现出当时人们是如何认知、定义所在城市的!
    在同类城市历史图中,很多要素明显进行了尺寸的放大,并有意略去了一些城市要素,这种取舍之间暗示了某些要素在当时人们心目中的地位很重要,而另一些则不很重要。
    Nov. 9
    Yee L.wrote:
    看着这张嘉定古代的地图,我想是没有比例的,整体把握住,各部分有相对比例就可以了。设计草图是不是也可以这样,相对比例好了就行了,我就是这样的。
    Nov. 7
    Yee L.wrote:
    引号内是乡下人的意思。八千是二手多层,新楼要突破一万。
    Nov. 3
    "乡捂宁"是何意?,八月份的嘉定房价8000估计不止吧?!
    Nov. 3
    Yee L.wrote:
    我非常喜欢嘉定,八月在上海的时候,很想和家里商量把广州一处空宅卖掉,在嘉定买个二手房,当时嘉定的价位是八千左右。现在年底通地铁,马上就涨了两千了。嘉定这地方,古代以民风淳朴出名,是教化之城,建国后也定位为科技之城,环境保护还是不错的。可恨的是上海人还老是看嘉定是“乡捂宁”,真是有眼不识。
    Nov. 2
    看嘉定古城图,环形城市,十字街道,格局清晰,十字街交叉口也是城市的公共核心;再看现在的嘉定新城,虽为外国人设计,但形态与古城同构的特征很明显,当“历史”转了一圈之后,又回到一种“原初意义”上的格局,这种回归也许可以引发我们很多的思考。
    Nov. 2
    核桃 Qwrote:
    看着真挺不牢靠的呀
    Nov. 1

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