Loading slant coefficients for geotechnical report

[çağrı oruç]

hello, in the hansen bearing capacity formula, B' is the effective foundation width and the ic iq iy values are referred to as the loading inclination numbers. As a result of the combination of horizontal and vertical loads, the loads on the foundation can be inclined and affect the bearing capacity calculation. Sample solution and formulas are attached here in the sample solution fx fy and fz also have mx and my values as moments on horizontal axis. For fz value, vertical load is written. Does anyone have any information about this.

 

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no help?

 

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Even the calculation of loading obliquity B angle is being done. We can't prepare a geotechnical report until this value is taken from idecad. There is a solution in the attached account, but when the calculation is made with the 1y combination there, the angle appears larger, as if there is an error.

 

[exen]

Hello, I will try to convey as much as I know. The vertical axial force Fz given in the example is required in the load slope factors section of the formula given by Hansen. In order to find the B' and L' values in the calculation of the basic effective area, the eccentrics must be known. L'=L-2ex B'=B-2-ey effective area is calculated with A'=B'*L' ex = Mx/V and ey=My/V. (Fz=V) Briefly, vertical calculation force required for eccentric calculation. I hope I didn't misunderstand what you wrote.

 

[2m proje]

Hello there; At the foundation level, the oblique load can be defined in two ways. the first; load on a horizontal foundation at an angle to the vertical. the second one is in the form of a normal load on a sloping foundation... The bearing capacity equation given in tbdy is the Terzaghi equation, which is given as a suggestion and other equations accepted in the literature such as hansen, meyerhof etc. can also be used. Similar factors are involved in all these relations. foundation base slope factor, load inclination factor, depth factor, etc... the load inclination factor meant here is given for inclined load, that is, inclined columns. In the majority of our projects, the columns that step on the foundation come upright at an angle of 0 degrees from the vertical. therefore, these coefficients should be taken as 1 in the absence of an inclined column. It is necessary to discuss the necessity of giving a coefficient in the two bearing capacity equations in a program that performs static analysis. because in my opinion, what should be requested as the output of the static program; The required parameters should be in the geotechnical report format in order to make the desired investigations. these are the foundation stresses, Vtx, Vty etc. for 1.4G+1.6Q and seismic combinations. are forces. The example report you shared shows beta 5.55 degrees, either there are slanted columns in the system or I think the program gave this value as a result of a misunderstanding. Best regards.

 

[MaFiAMaX]

Hi; The inclined load at the foundation level can be defined in 2 ways: the first is the load on a horizontal foundation at an angle to the vertical and the second is the normal load on an inclined foundation... on tbdy The bearing capacity equation given is the Terzaghi equation and it is given as a suggestion and other equations accepted in the literature such as hansen, meyerhof, etc. can also be used. similar factors are included in all these equations: foundation base slope factor, load inclination factor, depth factor, etc. what is meant here is load The inclination factor is given for the inclined load, that is, the inclined columns. In most of our projects, the columns pressing on the foundation come upright at an angle of 0 degrees from the vertical. Therefore, in the absence of inclined columns, these coefficients should be taken as 1. It is necessary to discuss the necessity of it, because in my opinion, what should be requested as the output of the static program; geote The required parameters should be in the clinical report format in order to make the desired investigations. these are the foundation stresses, Vtx, Vty etc. for 1.4G+1.6Q and seismic combinations. are forces. The example report you shared shows beta 5.55 degrees, either there are slanted columns in the system or I think the program gave this value as a result of a misunderstanding. Best regards.

You explained it perfectly. Calculation and responsibility of the soil bearing capacity is the responsibility of the person who prepared the soil & geotechnical survey report. In my opinion, the fact that the carrying capacity calculation is clearly stated in TBDY 2018 makes it seem as if the responsibility of this work is on the static project author. This calculation was not clearly stated in the old earthquake code, now a binding article has been introduced for the people who prepared the ground survey report. As a result, I think that ideCAD does not have to make such a calculation.

 

[çağrı oruç]

Hi; The slant load at the foundation level can be defined in 2 ways: the first is the load on a horizontal foundation at an angle to the vertical and the second is the normal load on an inclined foundation... on tbdy The bearing capacity equation given is the Terzaghi equation and it is given as a suggestion and other equations accepted in the literature such as hansen, meyerhof, etc. can also be used. similar factors are included in all these equations: foundation base slope factor, load inclination factor, depth factor, etc. what is meant here is load The inclination factor is given for the inclined load, that is, the inclined columns. In most of our projects, the columns pressing on the foundation come upright at an angle of 0 degrees from the vertical. Therefore, in the absence of inclined columns, these coefficients should be taken as 1. It is necessary to discuss the necessity of it, because in my opinion, what should be requested as the output of the static program; geote The required parameters should be in the clinical report format in order to make the desired investigations. these are the foundation stresses, Vtx, Vty etc. for 1.4G+1.6Q and seismic combinations. are forces. The example report you shared shows beta 5.55 degrees, either there are slanted columns in the system or I think the program gave this value as a result of a misunderstanding. Regards.

loading inclination numbers are not caused by column inclination. It is the angle formed as a result of the resultant of vertical and horizontal load. I shared the necessary combinations and solution in the sample book. I talked to idecad and they took notes for it to be published in the report. Columns on the foundation are not homogeneous, the carrier system is not homogeneous, just as the center of mass and stiffness do not coincide such as that the basic compressive stresses are different at every point. I am an idecad user and it does not calculate the beta angle I want, it gives fx fy and fz. In the given example sta share, it is printed in the parameters section for the geotechnical report. It's not a mistake, I talked to them. I did not see it as a necessity or a suggestion, let me share the image of elran

 

[çağrı oruç]

Hi, Let me try to convey as much as I know. The vertical axial force Fz you gave in the example is required in the load slope factors section of the formula given by Hansen. In order to find the B' and L' values in the foundation effective area calculation, the eccentrics must be known. L'=L-2ex B'=B-2-ey effective area is calculated with A'=B'*L' ex = Mx/V and ey=My/V (Fz=V) In short, required for eccentricity calculation I hope I didn't misunderstand what you wrote.

thank you

 

[çağrı oruç]

Hi; At the foundation level, the oblique load can be defined in two ways. the first; load on a horizontal foundation at an angle to the vertical. the second one is in the form of a normal load on a sloping foundation... The bearing capacity equation given in tbdy is the Terzaghi equation, which is given as a suggestion and other equations accepted in the literature such as hansen, meyerhof etc. can also be used. Similar factors are involved in all these relations. foundation base slope factor, load inclination factor, depth factor, etc... the load inclination factor meant here is given for inclined load, that is, inclined columns. In the majority of our projects, the columns that step on the foundation come upright at an angle of 0 degrees from the vertical. therefore, these coefficients should be taken as 1 in the absence of an inclined column. It is necessary to discuss the necessity of giving a coefficient in the two bearing capacity equations in a program that performs static analysis. because in my opinion, what should be requested as the output of the static program; The required parameters should be in the geotechnical report format in order to make the desired investigations. these are the foundation stresses, Vtx, Vty etc. for 1.4G+1.6Q and seismic combinations. are forces. The example report you shared shows beta 5.55 degrees, either there are slanted columns in the system or I think the program gave this value as a result of a misunderstanding. Regards.[/ TBDY 2018 definitely this formula, that is, the hansen bearing capacity formula, which contains more comprehensive parameters, makes it necessary to use it, even if you add other calculations such as tailor, etc. to the geotechnical report, the value you will get should be hansen. You can look at the attached page 2. The bearing capacity should be calculated according to the long side and the short side of the effective area-effect foundation. fx fy fz loads mx my horizontal moments should be printed in the static program report. I am sharing the source for better understanding.

 

[MaFiAMaX]

fx fy fz loads mx my horizontal moments should be printed in the static program report. I am sharing the source for a better understanding. The issue is here to do the right thing, to do what is required of the profession. Good work

Hello Mr Cagri, I am and the 2m project actually we say the same thing. For this calculation, the necessary loads from the superstructure are given to the person who will prepare the soil and geotechnical report. In the explanation I put in the red box in the image below, there are areas that are not the subject of the static project author's research, such as the stratification of the foundation. That's why the other software you shared We should not calculate the carrying capacity of qk as he did. As a result, I understand that we are saying the same thing. Have a nice day.

 

[çağrı oruç]

fx fy fz loads mx my horizontal moments should be printed in the static program report. I am sharing the source for better understanding. works

Hello Mr. Çağrı, Me and the 2m project are actually saying the same thing. The loads from the superstructure required for this calculation are given to the person who will prepare the soil and geotechnical report. There are areas that are not the research subject of the static project author, such as the stratification of the foundation in the description I have enclosed in the red box in the image below. That's why we shouldn't calculate the qk bearing capacity as the other software you shared does. As a result, I understand that we are saying the same thing. I wish you a good day.

Hello, we are discussing gc gq bc bq foundation and ground slope numbers, not ic iq and iy loading inclination numbers. They do not have tbdy in their calculations. He said that accepted scientific studies should be taken (under the title of 16.8a) the issue is how to calculate them. I take maerhoff, some can take hanseni, but there is no such approach in tailor anyway. hansen and mayerhoff added tailoring and tbdy took it. good work

 

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also, if there is stratification, it is taken from the data report. Necessary calculations are made according to it. If you can obtain the book of prof.dr Mehmet Orhan, there are examples with solutions and when df>B, this bearing capacity formula is not used (it goes out of the definition of superficial foundation). (approximately short side x1.5-2) said that if there is layering on the horizontal, it should be taken into account. This can be taken from scientific studies. Good studies.