南非树蛇步行道/Mark Thomas

发布于：2023-05-15 15:34:02

South African tree snake walkways

设计师：Mark Thomas，Henry Fa

位置：南非

分类：园林小品

内容：实景照片

图片来源：Mark Thomas，Henry Fagan

图片：12张

Cape Town事务所的两位设计师完成了一个蜿蜒的木质走道，从树冠之中穿梭而过。这个步道叫做“树蛇”，沿着场地起伏的地形设计。设计师Thomas介绍说：“这个概念来自于场地地形，当地形不是平稳时，蛇会开始在树木间穿梭。”从起点开始，步道逐渐升高，高度上能到达12米的树顶。总共有十根金属管，支持上面分散的金属构筑物。柱子的位置和步道方向都致力于最小化对森林系统的破坏。柱子上方的圆管组成了步行道弧线形的脊梁。设计师Fagn说：“我们创造的是构筑物，要尽量限制对树林的破坏。”甲板由来自非洲西部的循环种植木板条组成在两个地方的步道特别宽，并且高于树冠，设置了木质座椅和扶手。

译者：Jevin

Cape Town architect Mark Thomas and engineer Henry Fagan have completed a sinuous wooden walkway that meanders through the treetops of a botanical garden on the eastern slopes of Table Mountain (+ slideshow)The walkway is called Boomslang, after a species of venomous sub-Saharan African snake, and follows a roughly crescent-shaped path across the undulating terrain of the site.

"The concept comes from the terrain," said Thomas. "There isn't a straight line on the terrain, so the snake starts by running in between the trees, then it winds through the trees and then sails above the trees."From concrete launch pads at either end of the plan, the path rises gradually along its 130-metre length, in places reaching a height of 12 metres above the forest floor.Deep concrete foundations anchor ten steel columns, supporting galvanised steel components that were laser cut and fabricated off site, before being transported to the gardens and craned into place.

The position of the columns and the route of the walkway was determined by the location of key trees within the arboretum and the need to minimise disruption to the delicate ecosystem of the forest floor."It's more of a sculpture than a structure that we created," said Fagan. "We started with what was structurally needed and [tried] to limit that to the minimum. It's a single frame with ribs that form the hand railings."A round pipe fixed to the tops of the columns forms a spine from which ribs curve upwards to support the decked walkway. The ribs also create stanchions for the handrails and the mesh side walls.

The decking is made from stained pine battens, with sustainably harvested Paduak wood from west Africa used for the curving handrails.In two places, the pathway widens to form a viewing area high above the treetops and a sheltered rest area, both with wooden benches that follow the curve of the handrail.To encourage the forest to colonise the structure and help it blend in with the natural environment, a special paint that attracts algae was applied to the galvanised steel surfaces.