public void get_parameters(ref Technical_Demand t1, ref longitudinal_lateral_connection t2, ref CrossSection t3)
{
//计算横梁的数量
t2.lateral_end_beam_nums = 2;
if (Constants.spanOfBridge == 20)
{
t2.intermediate_beam_nums = 3;
}
if (Constants.spanOfBridge > 20 && Constants.spanOfBridge <= 30)
{
t2.intermediate_beam_nums = 5;
}
if (Constants.spanOfBridge > 30)
{
t2.intermediate_beam_nums = 6;
}
double lateral_beam_gap = Constants.spanOfBridge * 1.0 / (t2.intermediate_beam_nums + 1);
t2.lateral_beam_gap = lateral_beam_gap;
//这里可以供用户选择是实腹式还是桁架式的横梁
//实腹式横梁的计算(跨间)
double tmp_height = t3.girder_web_height - 0.3;
if (tmp_height <= t3.girder_web_height * 0.5)
{
lateral_web_height = 0.5 * t3.girder_web_height;
}
else
{
lateral_web_height = tmp_height;
}
stiffener_Z = 0;
while (stiffener_Z == 0)
{
double tmp = 0.0;
//试算Z的值首先令腹板宽度为300mm厚度取纵梁腹板厚度
lateral_flange_width = 0.3 + tmp;
lateral_flange_thickness = t3.girder_web_thickness;
lateral_web_thickness = t3.girder_web_thickness;
axis_moment_inertial_lateral_beam = 1 / 12.0 * (lateral_flange_width * (lateral_web_height + 2.0 *
lateral_flange_thickness) * (lateral_web_height + 2.0 * lateral_flange_thickness)
* (lateral_web_height + 2.0 * lateral_flange_thickness)) - 1 / 12.0 * ((lateral_flange_width -
lateral_web_thickness) * lateral_web_height * lateral_web_height * lateral_web_height);
double equal_inertial = 0.0;
if (t2.intermediate_beam_nums == 1 || t2.intermediate_beam_nums == 2)
{
equal_inertial = 1.0 * axis_moment_inertial_lateral_beam;
}
if (t2.intermediate_beam_nums == 3 || t2.intermediate_beam_nums == 4)
{
equal_inertial = 1.6 * axis_moment_inertial_lateral_beam;
}
if (t2.intermediate_beam_nums == 5 || t2.intermediate_beam_nums == 6)
{
equal_inertial = 2.6 * axis_moment_inertial_lateral_beam;
}
stiffener_Z = (Constants.spanOfBridge * Constants.spanOfBridge * Constants.spanOfBridge) * equal_inertial / (t3.axis_moment_inertial_girder * (2.0 * t2.lateral_beam_gap)
* (2.0 * t2.lateral_beam_gap) * (2.0 * t2.lateral_beam_gap));
//if (stiffener_Z > 10)
//{
// cout << "Z=" << stiffener_Z << ">10" << endl;
// cout << "横梁格子刚度满足要求，横向传力均匀" << endl;
//}
if (stiffener_Z <= 10)
{
stiffener_Z = 0;
tmp += 0.05;
}
}
}
public void calculate_girder_parament(ref Technical_Demand t)
{
//计算girder_gap，假定width_flange长度在1.0-1.5之间
//根据经验girder_gap一般在2.5m-3.5m之间
//计算主梁根数
double tmp_girder_nums = 0.5 * ((t.Get_WidthOfBridge() - 1.0 * 2) / 2.5 + (t.Get_WidthOfBridge() - 1.0 * 2) / 3.5);
if (tmp_girder_nums - Math.Floor(tmp_girder_nums) > 0)
{
girder_nums = Convert.ToInt32(Math.Floor(tmp_girder_nums) + 2);
}
else
{
girder_nums = Convert.ToInt32(Math.Floor(tmp_girder_nums) + 1);
}
//计算主梁间距
girder_gap = Math.Floor((t.Get_WidthOfBridge() - 1 * 2) / (girder_nums - 1) * 10) / 10.0;
//计算挑臂长度
width_flange = 0.5 * (t.Get_WidthOfBridge() - girder_gap * (girder_nums - 1));
//计算主梁高度
double tmp_web_height = 0.5 * Constants.spanOfBridge * (1.0 / 12.0 + 1.0 / 25.0);
if (tmp_web_height * 10.0 > Math.Floor(tmp_web_height * 10))
{
//cout<<tmp_web_height<<endl;
girder_web_height = Math.Floor(tmp_web_height * 10) / 10.0 + 0.1;
//cout<<girder_web_height<<endl;
}
else
{
girder_web_height = tmp_web_height * 10 / 10.0;
}
//计算主梁腹板厚度，单位：m
double parameter_hw_tw = (Math.Floor(girder_web_height * 1000 / 310) + 1) / 1000.0;
if (parameter_hw_tw <= 10)
{
girder_web_thickness = 0.01;
}
else
{
girder_web_thickness = 0.012;
}
//计算主梁翼缘板尺寸
/*根据规范7.2.1：焊接板梁受压翼缘的伸出肢宽不宜大于40cm，也不应大于其厚度的12倍，
* 受拉翼缘的伸出肢宽不应大于其厚度的16倍。翼缘板的面外惯矩宜满足下式要求：
* 0<=Iyc/Iyt<=10; */
//根据经验翼板宽度在300mm-650mm之间（跨径小于40m），考虑焊接影响，翼板b=0.3-0.45h<600mm
//翼板厚度一般不超过32mm
//Q345最大弯拉设计应力为210MPa，最大弯压设计应力为189MPa
double tmp_yc = Constants.TH_CA * 1.0 / (Constants.TH_CA + Constants.TH_TA) * girder_web_height;
double tmp_yt = Constants.TH_TA * 1.0 / (Constants.TH_CA + Constants.TH_TA) * girder_web_height;
calculated_Moment = 0.5 * Constants.spanOfBridge * Constants.spanOfBridge * Constants.STEEL_INTENSITY;
double Area_c = calculated_Moment * 1.0 / (1.0 * Constants.PARAMETER_REDUCE * girder_web_height * Constants.TH_CA) - 1.0 * girder_web_height * girder_web_thickness / 6.0 * (2.0 * Constants.TH_CA - Constants.TH_TA) / Constants.TH_CA;
double Area_t = calculated_Moment * 1.0 / (1.0 * Constants.PARAMETER_REDUCE * girder_web_height * Constants.TH_TA) - 1.0 * girder_web_height * girder_web_thickness / 6.0 * (2.0 * Constants.TH_TA - Constants.TH_CA) / Constants.TH_TA;
//翼缘板宽度映射宽度在300-650mm之间
//上翼缘板尺寸计算
if (Constants.spanOfBridge <= 30)
{
girder_upper_flange_width = 0.4;
}
else
{
int tmp_girder_upper_flange_width = Convert.ToInt32(Math.Floor(Constants.spanOfBridge * 10 + 100));
if (tmp_girder_upper_flange_width % 5 > 0)
{
girder_upper_flange_width = Math.Floor(tmp_girder_upper_flange_width / 5.0 + 1) * 5 / 1000.0;
}
else
{
girder_upper_flange_width = tmp_girder_upper_flange_width / 1000.0;
}
}
int tmp_girder_upper_flange_thickness = Convert.ToInt32(Math.Floor(girder_upper_flange_width / 2.0 * 1000.0 / 12.0));
if (tmp_girder_upper_flange_thickness % 5 != 0)
{
girder_upper_flange_thickness = (tmp_girder_upper_flange_thickness / 5 + 1) * 5 / 1000.0;
}
else
{
girder_upper_flange_thickness = tmp_girder_upper_flange_thickness / 1000.0;
}
girder_upper_flange_thickness += 0.005;
if (girder_upper_flange_width >= 0.6 || girder_upper_flange_width >= 24 * girder_upper_flange_thickness)
{
girder_upper_flange_width = Math.Min(0.6, 24 * girder_upper_flange_thickness);
}
//下翼缘板尺寸计算
if (Constants.spanOfBridge <= 40)
{
girder_lower_flange_width = 0.55;
}
else
{
int tmp_girder_lower_flange_width = Convert.ToInt32(Math.Floor(Constants.spanOfBridge * 10 * 4 / 3.0));
if (tmp_girder_lower_flange_width % 5 > 0)
{
girder_lower_flange_width = Math.Floor(tmp_girder_lower_flange_width / 5.0 + 1) * 5 / 1000.0;
}
else
{
girder_lower_flange_width = tmp_girder_lower_flange_width / 1000.0;
}
}
int tmp_girder_lower_flange_thickness = Convert.ToInt32(Math.Floor(girder_lower_flange_width / 2.0 * 1000.0 / 16.0));
if (tmp_girder_lower_flange_thickness % 5 != 0)
{
girder_lower_flange_thickness = (tmp_girder_lower_flange_thickness / 5 + 1) * 5 / 1000.0;
}
else
{
girder_lower_flange_thickness = tmp_girder_lower_flange_thickness / 1000.0;
}
girder_lower_flange_thickness += 0.01;
if (girder_lower_flange_width >= 0.6 || girder_lower_flange_width >= 32 * girder_lower_flange_thickness)
{
girder_lower_flange_width = Math.Min(0.6, 32 * girder_lower_flange_thickness);
}
//计算纵梁的惯性矩
double Area = girder_upper_flange_thickness * girder_upper_flange_width +
girder_lower_flange_width * girder_lower_flange_thickness +
girder_web_thickness * girder_web_height;
double yc = (1.0 / Area) * (0.5 * girder_upper_flange_width * girder_upper_flange_thickness * girder_upper_flange_thickness
+ girder_web_thickness * girder_web_height * (0.5 * girder_web_height + girder_upper_flange_thickness)
+ girder_lower_flange_width * girder_lower_flange_thickness * (0.5 * girder_lower_flange_thickness
+ girder_upper_flange_thickness + girder_web_height));
//只计算腹板的惯性矩
axis_moment_inertial_girder = 1 / 3.0 * (girder_web_thickness * yc * yc * yc) + 1 / 3.0 * (girder_web_thickness * (girder_web_height - yc)
* (girder_web_height - yc) * (girder_web_height - yc)) + girder_upper_flange_thickness * girder_upper_flange_width * yc * yc +
girder_lower_flange_width * girder_lower_flange_thickness * (girder_web_height - yc) * (girder_web_height - yc);
//计算各个结构定位线的偏移距离
lateral_offset_dis = new double[girder_nums];
//结构定位线数量为奇数的时候
if (girder_nums % 2 == 1)
{
int tmp_num = -girder_nums / 2;
for (int i = 0; i < lateral_offset_dis.Length; i++)
{
lateral_offset_dis[i] = tmp_num * girder_gap;
tmp_num++;
}
}
//为偶数的时候
else
{
double tmp_off_para = -girder_nums / 2 + 0.5;
for (int i = 0; i < lateral_offset_dis.Length; i++)
{
lateral_offset_dis[i] = tmp_off_para * girder_gap;
tmp_off_para++;
}
}
//计算垂直偏移距离
//桥面板厚度t的计算采用经验公式t=k*(30b+110)单位是mm
//k取1.2，铺装层厚度取70mm，加腋高度取80mm，斜率为1:3
double th_plate = 1.2 * (30 * girder_gap + 110);
vertical_offset_dis = Convert.ToInt32(Math.Ceiling(th_plate / 10.0) * 10);
}
