Both Windows® programmes have an object- and graphic-oriented working environment of comparable functionality. The programmes can be used for the calculation of buried pipes that are integrated in open ditch or under embankment condition according to working sheet ATV-DVWK-A 127, edition August 2000, as well as for the calculation of circular pipes laid in the jacking method according to working sheet ATV- A 161, edition January 1990.
The application of buried pipes considers all standard types of pipes stated in the ATV-A 127: depending on the pipe type, they are treated as rigid or as flexible, mouldable pipes. In detail, the following calculation options are supported:
- analyses for circular pipes with/without base and egg-shaped pipes
- consideration of different wall thicknesses in cross-bar, crown and base of concrete and reinforced concrete pipes
- design of the reinforced concrete pipes optionally according to DIN 1045, DIN 1045-1, EN 1992-1 and according NAs for AT & CZ optionally for normal or high-performance concrete
- consideration of the DIN EN 1916 and DIN V 1201+1202 in the case of reinforced concrete design
- analysis of fatigue according to DIN 1045-1 paragraph 10.8 for calculated stresses in cracked state with 2*10^6 stress cycles.
- single- or double-layer formation of reinforcement
- rough calculation of the steel weight of the circular and longitudinal reinforcement per meter
- consideration of soil stresses due to dead load
- calculation of the bulk loads depending on concrete cover and pipe diameter
- consideration of traffic loads for regular vehicles, railway traffic and design air planes
- classification of reinforced concrete pipes according to the required European standards with the calculation of the equivalent apex pressure force and the required load class LC
For all pipe types, a stress analysis is performed. If necessary, durability analysis; for flexible pipes additionally strain analysis, the short-time and long-time deformation and the stability analysis is performed as well. The numeric output of buried pipes can be completed by a true-to-scale graphic display of the buried pipe with a soil pro-file and water levels.
The jacking pipes are treated as circular, rigid pipes. Possible materials are reinforced concrete, stoneware, steel and asbestos cement. The application furthermore supports the following calculation options:
- design of the reinforced concrete pipes optionally according to DIN 1045, DIN 1045-1, EN 1992-1 and according NAs for AT & CZ optionally for normal or high-performance concrete
- single- or double-layer formation of the reinforcement
- rough calculation of the steel weight of circular and longitudinal reinforcement per meter
- consideration of soil stresses from dead load
- consideration of the DIN EN 1916 and DIN V 1201 in the case of reinforced concrete design
- fatigue analysis according to DIN 1045-1 paragraph 10.8 for calculated stresses in cracked state with 2*10^6 stress cycles.
- calculation of the bulk loads depending on concrete cover and pipe diameter
- consideration of traffic loads for regular vehicles, railway traffic and design air planes
- classification of reinforced concrete pipes according to the required European standards with calculation of the equivalent apex pressure force and the required load class LC
The design of the jacking pipes is performed for different stresses in the construction and the service state as well as for a minimum design for the collection of possible constraint. The maximum values of the three design stages are essential for the following analyses. The stress analyses with jacking pipes are both performed in longitudinal direction and transverse to the pipe axis. If required, the fatigue analysis is performed as well. The result document contains placing hints, soil parameters, stress resultants and stress analyses in the three design states transverse to the pipe axis; the pressure stresses in longitudinal direction as well as a diagram of the permissible jacking forces depending on the gaping joint and the permissible normal pressure stress.
To top
