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r - The Hong Kong Polytechnic University

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Locations of Static Strain<br />

Gauges Considered<br />

East Tower<br />

Pre-camber<br />

Direction of<br />

Stonecutters<br />

Tower under<br />

construction<br />

Main Span Side<br />

B<br />

Stonecutters<br />

Tower<br />

Stonecutters Side<br />

A<br />

Main Span Side<br />

(West)<br />

Stonecutters Side<br />

(East)<br />

Figure 46 Arrangement of Static Strain Gauges for Permanent Loads Monitoring in Stonecutters Tower<br />

Measurement and Predict Strains at Stonecutter Tower-Bases<br />

C om pressive S train in M icro-S trains<br />

(at 20 degrree C)<br />

800<br />

700<br />

600<br />

500<br />

400<br />

300<br />

200<br />

100<br />

0<br />

Location A (MS) Location B (MS) Location A (AS) Location B (AS)<br />

Completion of Tower<br />

(13 Mar 2008)<br />

0 10 20 30 40 50 60 70<br />

Closure of Bridge Deck<br />

(19 Mar 2009)<br />

Number of Months after Concreting<br />

Openning of Bridge to Public Traffic<br />

(20 Dec 2009)<br />

Note: MS = Measured Strain<br />

AS = Analyzed Strain<br />

Figure 47 Concrete Strain Histories at Locations A and B (as shown in Figure 46 above) at Stonecutters<br />

Tower Base<br />

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