Parametric Modeling Design

Tracing Your Path__Pedestrian and Bicycle Bridge

Hua Yan, MLA

Location: Houston,TX
Instructor: Dr.Wei Yan, Dr.Jun Hyun Kim

Texas A&M University

Spring 2016

The project is about a pedestrian and bicycle bridge with pavement system could tracing movement of walkers and cyclers. Inspired by idea of Social computing, which is an area of computer science that is concerned with the intersection of social behavior and computational systems, the bridge designer apply mobile application as remote control, simulating the movement of humans on the bridge.

The bridge has two part separately, could be mainly used for pedestrians and bikers. The linkage between the two parts improve flexibility on choosing direction, and reinforce the structure with wires as well.

Pedestrian Tracing Pavement

The experimental model was created with Rhino-grasshopper and remote control device, which simulate the situation when users are walking on the bridge. The more walkers get together, the more colorful the pavement could be.

Figure 1: Individual Walker Pattern

Figure 2: Two Walkers Pattern

Figure 3: Group Walkers Pattern

Bicycle Tracing Pavement

The model provides a function of tracing the moving path of bikes, and gives instantaneous velocity and curvature at certain points.

Figure 4: Analyzes 1 Stantaneous Velocity

Figure 5: Analyzes 2 Curvature of Points in the Moving Path

Figure 6: Data Output

Remote Control

1 Install mobile application and choose interface as need.

2 Set the Mobile in the same IP address and port data with PC .

Figure 7: Pedestrian pavement model, simulating by remote control device.

Figure 8: Bicycle pavement model, simulating by remote control device.

Bridge Structure

Figure 9: Using points on the bridge to create wave shape.

Figure 10: Bridge slab generation.

Figure 11: Handrail creating by vector and interpolate curve functions.

Figure 12: Wires Generation

Figure 13: Connected Bridge

Demonstration Model

Figure 14: Simple model of bicycle

Figure 15: Simple model of walkers.

Python Script

this Python Script try to convert input Points within 1 unit square to the sector shape of the bridge slab.

Figure 16: Projected Points on Pedestrian Bridge Side

Figure 17: Projected Points on Bicycle Bridge Side

Rendering Effects

Perspective 1

Perspective 2

Perspective 3

Reference:

Pallett, J., and Mark Burry. The new mathematics of architecture. Thames and Hudson, 2010.
https://en.wikipedia.org/wiki/Social_computing
https://www.interaction-design.org/literature/book/the-encyclopedia-of-human-computer-interaction-2nd-ed/social-computing

ARCH 655 Project 1_Case Study of Parametric Modeling,

Harbin Opera House, China

Hua Yan, MLA

Instructor: Dr. Wei Yan

Texas A&M University

Spring 2016

Parametic Modeling Design_Harbin Opera House

Introduction:

Architects: MAD Architects

Location: Harbin, Heilongjiang, China

Directors: Ma Yansong, Dang Qun, Yosuke Hayano

Area: 850000.0 ft2

Project Year: 2015

Photographs: Hufton+Crow, Adam Mørk

Harbin Opera House located in China， designed by MAD Architects in 2015. Some functions of Rhino-grasshopper, such as Kangaroo and weave-bird, are utilized to create parametric form (mass and skin) for modeling. The case study also includes alternative solution by physically-based modeling some analyses.

Objectives

The Case study aimed at using parametric modeling method to generate building model. The project of Harbin Opera House have three main parts, main building, annex building and outdoor plaza. I started for base foundation and used nurbcurve method to control the relationship between three parts.

Base Structure Generation

Figure 1: Based on 13 given points, The base line was generated with nurbcurve method. Then, Functions of "Loft" and "Scale" help to create the curve surface and eventually finish the mass of building.

Figure 2: Variables for building mass.

Figure 3: Variables for outdoor plaza.

Kangaroo to create curved ceiling

Figure 4: In the line of top layer, several specific points are selected for dome ceiling area by function icon of "cull index". Then, using "Pline" function to Points to surface and using "weave bird" functions to convert surface to mesh.

The building ceiling with wave form required more control points to control the shape of the ceiling.

Control points group 1: use "Naked Vertices", "Demesh" and "item" getting control points on the edges of mesh.

Control points group 2: first, bake points of function of "Naked Vertices", select suitable points to create form needed. second, manipulate clothed points: getting points coordinates with "cull index" and "panel" as 2nd group of points.