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Surcharges in DeepEX

Surcharges in DeepEX


DeepEX enables the user to use a number of different surcharge types. Some of these surcharges are common with NONLINEAR, however, most surcharge types are not currently included in the Nonlinear Engine. The Table below lists the available types of surcharges.


Table: Available surcharge types


Surcharge Type

Permanent/Temporary (P/T)

Exists in Nonlinear Engine

Exists in Conventional Analysis

Conventional Analysis Comments

Surface Line load

P & T

No

Yes

Theory of elasticity.

Can include both Horizontal and Vertical components.

Line load

P & T

No

Yes

Same as above

Wall Line Load

P & T

No

Yes

Same as above

Surface Strip Surcharge

P & T

Yes

Yes

Same as above

Wall strip Surcharge

P & T

Yes

Yes

Same as above

Arbitrary Strip Surcharge

P & T

No

Yes

Theory of elasticity.

Vertical Direction only.

Footing (3D)

P

No

Yes

Theory of elasticity.

Vertical Direction only.

Building (3D)

P

No

Yes

Theory of elasticity.

Vertical Direction only.

3D Point Load

P & T

No

Yes

Theory of elasticity.

Vertical Direction only.

Vehicle (3D)

T

No

Yes

Theory of elasticity.

Vertical Direction only.

Area Load (3D)

P & T

No

Yes

Theory of elasticity.

Vertical Direction only.

Moment/Rotation

-

Yes

No

-


When EC7 (or DM08) is utilized, the following items are worth noting:


  1. In the NONLINEAR module: In the default option the program does not use the Default Nonlinear Engine for determining surcharge actions, but calculates all surcharges according to the conventional methods. If the Nonlinear Simplified Load Options are enabled, then all conventional loads are ignored. Only loads that match the Nonlinear engine criteria are utilized.

  2. Unfavorable Permanent loads are multiplied by F_LP while favorable permanent loads are multiplied by 1.0.

  3. Unfavorable Temporary loads are multiplied by F_LV while favorable temporary loads are multiplied by 0.


The software offers great versatility for calculating surcharge loads on a wall. Surcharges that are directly on the wall are always added directly to the wall. In the default setting, external loads that are not directly located on the wall are always calculated using theory of elasticity equations. Most formulas used are truly applicable for certain cases where ground is flat or the load is within an infinite elastic mass. However, the formulas provide reasonable approximations to otherwise extremely complicated elastic solutions. When Poison's ratio is used the software finds and uses the applicable Poisson ratio of v at each elevation.


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Figure: Simplified Nonlinear load options and Elasticity surcharge options


 

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Line Load Surcharges

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