﻿ 贵都高速大跨径连续刚构桥——石门坎大桥长期挠度监测分析

# 贵都高速大跨径连续刚构桥——石门坎大桥长期挠度监测分析Analysis of Long-Term Deflection of Monitoring Result on Gui-Du High Highways Long Span Continuous Rigid Frame Bridge—Shi Men Kan Bridge

Abstract: Long span continuous rigid frame bridge is widely used in China. The increase deflection is an im-portant problem for bridge safety of long-span continuous rigid frame. According to Gui-Du highway Shi Men Kan bridge deflection monitoring results over the past 3 years, the characteristics of long span continuous rigid frame bridge deflection with time were analyzed. It provides real data for same kind bridge deflection analyzed with time.

1. 引言

2. 工程概况及桥面高程监测

2.1. 工程概况

2.2. 桥面高程测点布置

2.3. 桥面高程测点布置

Figure 1. Bridge layout plan of Shimenkan

Table 1. Instrument and equipment

Figure 2. Measuring points layout of Shimenkan bridge

3. 石门坎大桥运营期监测结果分析

3.1. 桥面高程监测结果分析

3.2. 跨中挠度随时间变化特性

4. 结论与展望

Figure 3. Left monitoring results of left bridge

Figure 4. Right Monitoring results of the left bridge

Figure 5. Left monitoring results of right bridge

Figure 6. Right monitoring results of the right bridge

Figure 7. Deflection varying with time of monitoring points on the right side of right bridge

Figure 8. Deflection varying with time of monitoring points on the right side of left bridge

Figure 9. Deflection varying with time of monitoring point on the left side of right bridge

Figure 10. Deflection varying with time of right side on the right Shimenkan Bridge

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