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20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM Title slide Steel pile day 20.05.2010 RD-PILE WALL – NEW WAY TO BUILD Lars Johansson Ramboll Sverige AB in.

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Presentation on theme: "20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM Title slide Steel pile day 20.05.2010 RD-PILE WALL – NEW WAY TO BUILD Lars Johansson Ramboll Sverige AB in."— Presentation transcript:

1 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM Title slide Steel pile day RD-PILE WALL – NEW WAY TO BUILD Lars Johansson Ramboll Sverige AB in co-operation with Juha Forsman Ramboll Finland Ay

2 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM AMC – Analysis Modelling Calculation Group Grundvatten- Ytvatten- Dagvatten- Spill Bygg- konstruktion Geokonstruktion Trafik

3 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM AMC – Analysis Modelling Calculation Group •Samverkansanalyser – samverkan mellan jord och konstruktioner. •Nära samarbete mellan geotekniker och konstruktörer •Eurokoder (EC7) •Funktionsdesign mer än brottdesign •Krav på mer avancerade analyser (finita element analyser) •Särskild satsning med bas i Malmö •Spänner över Norden, Baltikum och UK •Samarbete (andra aktörer på marknaden, Högskolor/Universitet/ Forskningsinstitut) •Bättre kvalitet

4 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM EXAMPLES OF ”TRADITIONAL” SHEET PILE WALL Content slide, two columns with image

5 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM TRADITIONAL BUILDING PIT SUPPORTED BY SHEET PILE WALL • Insecure method to penetrate through rocky boulderly soil layers = contact to bedrock through moraine is often hard to achieve • Outer walls of building must have their own foundations • Basement walls cannot extend to the boundary of the excavation pit (sheet pile wall requires space) • Many support levels (struts). Steel bars/dowels are needed for anchoring of the lower end into bedrock • Problems to control ground water fill clay moraine rock anchors sheet pile wall pit boundary

6 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM NEW, ALTERNATIVE SOLUTION TRADITIONAL SOLUTION fill clay moraine rock anchors plot boundary bedrock RD-pile wall

7 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM ACHIEVED BENEFITS •RD-pile wall can be installed near the excavation boundary and ”in open space” in plot boundary •Distance of ground water flow increases => amount of water decreases. Water- tight structure as a whole. •Act as bearing structure (foundations, basement wall, good stiffness) •External anchoring is not allways needed (for instance upper deck acts as inside strut) •Penetration of all soil layers •Contact to bedrock is secured

8 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM example 2: BUILDING SITE AND DESIGNED UNDERGROUND SPACE GW Sa Mr Tä

9 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM 1. INSTALLATION OF RD-PILE WALL GW

10 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM 2. INSTALLATION OF REST OF THE DRILLED PILES AND CONSTRUCTION OF FIRST LEVEL FLOOR GW

11 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM 3. EXCAVATION OF FIRST BASEMENT LEVEL AND CONSTRUCTION OF FLOOR DECK GW

12 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM 4. EXCAVATION AND BLAST BREAKING OF SECOND BASEMENT LEVEL AND CONSTRUCTION OF FLOOR DECK GW

13 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM 5. AT A SAME TIME CONSTUCTION UPWARDS IS POSSIBLE GW

14 20th MAY 2010 RUUKKI STEEL PILE DAY STOCKHOLM THANK YOU Endslide.


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