김경종
62 lines
2.4 KiB
Markdown
62 lines
2.4 KiB
Markdown
---
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type: concept
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title: "Midas Civil PSC and Prestress Loss Analysis"
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created: 2026-06-02
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updated: 2026-06-02
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address: c-000169
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aliases:
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- MIDAS Civil PSC analysis
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- midas Civil prestress loss analysis
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tags:
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- concept
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- finite-element-method
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- midas-civil
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- prestress
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- bridge-analysis
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status: current
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related:
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- "[[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]]"
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- "[[midas Civil]]"
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- "[[Beam and Frame Finite Elements]]"
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- "[[Midas FEA Embedded Reinforcement Modeling]]"
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- "[[Midas Civil Construction Stage and Time-Dependent Analysis]]"
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sources:
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- "[[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]]"
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source_refs:
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- source: "[[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]]"
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raw_path: ".raw/MidasCivilAnalysisReference/"
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raw_files:
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- "MidasCivilAnalysisReference_051.md"
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- "MidasCivilAnalysisReference_049.md"
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- "MidasCivilAnalysisReference_002.md"
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md_indices:
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- 51
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- 49
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- 2
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match: "heuristic-heading-keyword"
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confidence: low
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---
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# Midas Civil PSC and Prestress Loss Analysis
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## Definition
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Midas Civil PSC and prestress loss analysis is the prestressed concrete workflow for tendon force application and loss evaluation in bridge/civil member models.
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## How It Works
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The manual covers prestress loading and losses from anchorage slip, tendon-sheath friction, elastic deformation of concrete, relaxation, and time-dependent concrete behavior. Relaxation models include Magura and CEB-FIP style references. The PSC workflow is tightly coupled to construction stages because tendon stressing, section age, creep, shrinkage, and prestress losses evolve over time.
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## Solver Development Notes
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- Tendon geometry and eccentricity must be converted to equivalent nodal/member actions consistently.
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- Loss calculations need staged state: jack force, anchorage conditions, friction path, concrete elastic shortening, creep, shrinkage, and relaxation.
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- Result comparison should include tendon force, member force, stress, camber/deflection, and reaction histories.
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- PSC tests should isolate immediate losses before combining them with long-term losses.
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## Connections
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- [[Beam and Frame Finite Elements]] supplies the member-analysis base.
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- [[Midas Civil Construction Stage and Time-Dependent Analysis]] supplies the stage/time dependence.
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- [[Midas FEA Embedded Reinforcement Modeling]] provides a detail-FE prestress modeling counterpart.
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