Temperature Field and Gradient Effect of a Steel-Concrete Composite Box Girder Bridge

Table 2

Temperature data measured on June 7, 2021 (unit: °C).

Time	Ambient temperature	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10
01 : 00	20	18.6	19.7	19.5	19.9	20	18.3	18.6	19.1	19.6	19.1
03 : 00	18	16.9	17.6	17.2	16.9	16.8	16.5	16.8	17.1	17.3	17.2
05 : 00	18	16.2	17.1	16.9	16.8	16.9	16.4	16.7	16.7	16.8	16.9
07 : 00	19	17.8	17.3	18.6	18.8	18.7	20.8	21.2	20.3	19.5	20.1
09 : 00	22	23.2	20.9	21.6	22	21.8	24.5	24.8	23.9	23.1	23.8
11 : 00	26	27.8	23.4	25.2	25.6	25.5	29.6	29.8	28.7	27.1	27.9
13 : 00	29	32.1	28.1	28.6	29.2	28.9	30.1	30.5	29.8	29.5	32.3
15 : 00	31	33.5	31.9	32.6	34.2	34.1	30.6	30.8	30.5	30.9	33.1
17 : 00	32	33.8	32.5	32.9	34.9	34.5	32.1	32.3	31.5	31.1	33.3
19 : 00	30	32.9	32.1	31.1	31.6	31.3	30.2	30.3	30.1	30.7	31.3
21 : 00	23	27.5	26.8	24.7	24.7	24.5	22.9	23.3	23.1	25.6	26.8
23 : 00	21	21.1	21.9	20.2	20.4	20.4	20.4	20.5	20.2	20.8	20.3