"Calculation(하중계산 산출표)"
◎ LOAD SETTINGS
The live loads shall consist of the moving load of truck, sidewalk loading, and the tram-car loading.
Live loads for floors and floor systems floors and floor system shall be designed for the following live loads.
◎ LOAD SETTINGS
Class |
Load |
Total Load W(t) |
Front Weel Load 0.1W(kg) |
Rear Weel Load 0.4W(kg) |
Width of Front Wheel b1 (cm) |
Width of Rear Wheel b2 (cm) |
Contact Length of Wheel b2 (cm) |
|---|---|---|---|---|---|---|---|
1st class bridge |
T-20 |
20 |
2,000 |
8,000 |
12.550 |
50 |
20 |
1st class bridge |
T-14 |
14 |
1,400 |
5,600 |
12.550 |
50 |
20 |
Loads to be equally distributed on sidewalk road shall be 500 ㎏/㎡ Figure 2.1.1. T-Loads traverse Trench
◎ SPEC. OF VEHICLES LOAD
Load data are referred to road & bridge specification as follow
Class |
Load |
Total Load W(t) |
Rear Weel Load 0.4W(kg) |
Added Impact Load (kg) |
Contact Length of Wheel (cm) |
Width of Rear Wheel b (cm) |
Applycation of Vehicles |
|
|---|---|---|---|---|---|---|---|---|
 |
1st class bridge |
T-20 |
20 |
8,000 |
11,200 |
20 |
50 |
Remicon Truck Dump Truck |
 |
1st class bridge |
T-14 |
14 |
5,600 |
7,840 |
20 |
50 |
Bus Dump Truck |
 |
small truck |
T-6 |
6 |
2,400 |
3,360 |
20 |
24 |
Small Truck Fork Lift |
 |
passanger carlsedan |
T-2 |
2 |
800 |
1,120 |
20 |
16 |
Passanger car/sedan |
 |
Walk Way |
500 (kg/㎡) Distribution Load |
||||||
◎ STEEL GRATING의 강도계산
◈ 범례
ℓ: 지간거리(TRENCH 폭 :cm)
σa : 허용응력
p : 1지축의 실제부하 하중 (kg)
p : BEARING BAR 간격 (cm) (a) X (b)차륜의 접지면적 (cm X cm)
n : 접지면 내의 BEARING BAR수 (횡단형 n=b/p)+1, 측구형 n=(a/p)+1
i : 충격계수 (횡단형 i=0.4, 측구형 i=0)
z : 단면계수(㎠)
◈ 하중별 접지면적
접지면적 |
하 중 |
|||
|---|---|---|---|---|
T-20 |
T-20 |
T-20 |
T-20 |
|
a |
20 cm |
20 cm |
20 cm |
20 cm |
b |
50 cm |
50 cm |
24 cm |
16 cm |
