1 Introduction
2 Materials and Methods
2.1 Design Principle
2.2 Model Construction
2.3 Theoretical Analysis
2.3.1 Inter-storey Drift Angle Theory
2.3.2 Calculation of Load Capacity of PH Joint Domain
2.3.3 Friction Energy Dissipation Analysis of the PH Joint
2.4 Test Overview
2.4.1 Frame Model Design
2.4.2 PH Joint Design
Model conditions | PH-1 | PH-2 | PH-3 | PH-4 | PH-5 |
---|---|---|---|---|---|
Limiting bolt grade | 4.8 | 8.8 | 4.8 | 0 | 0 |
Friction plate type | RP | RP | CP | RP | CP |
Load torque (N m) | 250 | 250 | 250 | 375, 450, 550 | 550 |
2.4.3 Test Setup and Loading System
Load level | Displacement amplitude (mm) | Cycle count | Inter-storey drift angle (rad) |
---|---|---|---|
1 | ± 2.7 | 3 | 0.0038 |
2 | ± 3.5 | 3 | 0.0050 |
3 | ± 5.3 | 3 | 0.0075 |
4 | ± 7.0 | 2 | 0.0100 |
5 | ± 10.5 | 2 | 0.0150 |
6 | ± 14.0 | 2 | 0.0200 |
7 | ± 21.0 | 2 | 0.0300 |
8 | ± 28.0 | 2 | 0.0400 |
9 | ± 35.0 | 2 | 0.0500 |
10 | ± 50.0 | 2 | 0.0700 |
11 | ± 70.0 | 2 | 0.1000 |
12 | ± 90.0 | 3 | – |
13 | ± 110.0 | 3 | – |
3 Results
4 Analysis and Discussion
4.1 Load Capacity of Test Model
Model | Calculated Qe (kN) | Test Qt (kN) | Qe/Qt |
---|---|---|---|
PH-1 | 15.84 | 17.41 | 0.91 |
PH-2 | 21.33 | 23.05 | 0.93 |