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Static and dynamic behaviour of soil-steel composite bridges obtained by field testing
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Design and Bridges.
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH , 2009. , xviii, 55 p.
Series
Trita-BKN. Bulletin, ISSN 1103-4270 ; 98
Identifiers
URN: urn:nbn:se:kth:diva-10530OAI: oai:DiVA.org:kth-10530DiVA: diva2:218881
Public defence
2009-05-27, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100624Available from: 2009-05-25 Created: 2009-05-25 Last updated: 2010-07-19Bibliographically approved
List of papers
1. Field testing of a long-span arch steel culvert during backfilling and in service
Open this publication in new window or tab >>Field testing of a long-span arch steel culvert during backfilling and in service
2005 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980, Vol. 1, no 3, 181-188 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents the first part of the in-situ measurements and data analyses for the tests conducted during backfilling and during service of a long-span corrugated steel culvert railway bridge over Skivarpsan, Rydsgard, Sweden. Static and dynamic tests were carried out measuring strains and displacements. Temperature readings were taken along with the measurements. Comparisons of moments during compaction showed that there is good agreement between test results and theoretical values. The theoretical calculation of the rise of the crown during compaction and the crown moments due to live load seem to be conservative, while the theoretical axial forces agree reasonably with the measured axial forces.

Keyword
culverts, railway bridges, dynamic loads, field tests, monitoring, instrumentation
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13731 (URN)10.1080/00222930500030929 (DOI)000242621100002 ()
Note
QC 20100624Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2017-12-12Bibliographically approved
2. Dynamic testing of a soil-steel composite railway bridge
Open this publication in new window or tab >>Dynamic testing of a soil-steel composite railway bridge
2009 (English)In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 31, no 12, 2803-2811 p.Article in journal (Refereed) Published
Abstract [en]

Actual dynamic response of a long-span corrugated steel culvert railway bridge is studied. The bridge, which is a type of soil-steel composite structures, has a span of 11 m. Tests were carried out by measuring strains and displacements during passages of a locomotive at different speeds. Vertical ballast accelerations as well as the effects of braking forces were also measured. The tests showed that the speed has a large influence on the displacements, thrusts and moments. The measured dynamic displacements and thrusts are as much as 20% larger than the corresponding static response. This is greater than the values specified in bridge design codes. Dynamic amplification factors as high as 1.45 were obtained for the moments at the quarter point which is found to be much larger than the values for the crown point. This type of bridge structure is believed to be less sensitive to resonance from passing trains than other common bridge types, due to the high damping values obtained from the forced vibration tests.

Keyword
Culverts, Railway bridges, Dynamic loads, Field tests, Dynamic amplification factors, Ballast accelerations, Monitoring, Instrumentation
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13730 (URN)10.1016/j.engstruct.2009.07.028 (DOI)000272428900001 ()2-s2.0-70449528402 (Scopus ID)
Note

QC 20100624

Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2017-12-12Bibliographically approved
3. Testing the static and dynamic behaviour of a soilsteel bridge
Open this publication in new window or tab >>Testing the static and dynamic behaviour of a soilsteel bridge
(English)Manuscript (preprint) (Other academic)
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13733 (URN)
Note
QC 20100624Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2010-06-24Bibliographically approved
4. Soil-Steel Interaction of Long-Span Box Culverts-Performance during Backfilling
Open this publication in new window or tab >>Soil-Steel Interaction of Long-Span Box Culverts-Performance during Backfilling
2010 (English)In: Journal of Geotechnical and Geoenvironmental Engineering, ISSN 1090-0241, E-ISSN 1943-5606, Vol. 136, no 6, 823-832 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents the performance of four long-span deep-corrugated steel box culverts with spans of 8- and 14-m during backfilling, as well as comparisons with finite-element modeling and design codes. Two of the culverts were stiffened at the crown arch. The test results show that the stiffening applied on the culverts is quite effective. The crown rises of the respective stiffened culverts were found to be half those of the not-stiffened culverts. The influence of the structure geometry on the soil-passive earth pressure was confirmed, as well as the sensitivity of box culverts to soil loads with increasing spans. The results showed that the influence of the size and shape of the box culverts on the amount of thrusts must be better implemented in the design method. The finite-element analysis results were conservative when live loading was concerned but the crown displacements and thrust during backfilling were underestimated.

Keyword
Box culverts, Buried structures, Field tests, Instrumentation, Soil-steel structures, Structural response, Design methods, Soil-structure interaction, Finite-element modeling
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13734 (URN)10.1061/(ASCE)GT.1943-5606.0000287 (DOI)000277742100005 ()2-s2.0-77953338338 (Scopus ID)
Note
QC 20100624Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2017-12-12Bibliographically approved
5. Testing the Response of Box-Type Soil-Steel Structures under Static Service Loads
Open this publication in new window or tab >>Testing the Response of Box-Type Soil-Steel Structures under Static Service Loads
2010 (English)In: Journal of Bridge Engineering, ISSN 1084-0702, E-ISSN 1943-5592, Vol. 15, no 1, 90-97 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents the static loading of four long-span deep-corrugated steel box culverts with spans of 14 and 8 m. The tests, which were part of a series of full-scale tests, involved strain and displacement measurements carried out at different cover depths under the load of a truck. Two of the culverts were stiffened at the crown. The test results showed that the stiffening applied on the culverts is quite effective and that plain structure is more sensitive to cover depth compared to stiffened structure. The crown stiffening is more effective under shallow soil covers. The maximum displacement of plain structure is approximately twice the maximum displacement of the stiffened structure measured at 45-cm depth of cover. The Swedish and Canadian design methods are conservative when estimating live load moments but they underestimate live load thrusts. The measured maximum thrusts are up to four times larger than the calculated design values where the variation depends on the size of the culverts and the depth of soil. The culvert size has considerable influence on the thrusts and moments generated at the crown centerline, which could be implemented in the design models.

Keyword
Box culverts, Buried structures, Deep corrugations, Field tests, Instrumentation, Soil-steel structures, Structural response, Service loads, Design methods
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13735 (URN)10.1061/(ASCE)BE.1943-5592.0000041 (DOI)000273036800009 ()2-s2.0-73349143620 (Scopus ID)
Note
QC 20100624Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2017-12-12Bibliographically approved
6. Response of Long-Span Box Type Soil-Steel Composite Structures during Ultimate Loading Tests
Open this publication in new window or tab >>Response of Long-Span Box Type Soil-Steel Composite Structures during Ultimate Loading Tests
2009 (English)In: Journal of Bridge Engineering, ISSN 1084-0702, E-ISSN 1943-5592, Vol. 14, no 6, 496-506 p.Article in journal (Refereed) Published
Abstract [en]

Soil-steel composite structures are getting more popular in recent years. With the introduction of more sophisticated structures such as box culverts with flexural stiffeners, the review of largely experience based design models became inevitable. The paper presents the ultimate loading part of full-scale testing conducted on corrugated steel box culverts. Structures with two different spans of 14 and 8 m and different crown stiffness were investigated using different cover depths. The tests indicate that the response of the structure to the depth of the cover is not linear. The structures become more vulnerable to applied loads as the soil cover decreases. The increase in the load-bearing capacity with increasing soil covers is linear, which agrees with the theoretical models. The crown stiffening, however, is more effective under shallow soil covers. The load resistance of the structures is doubled at the crown level with the crown stiffening. The Swedish design method overestimates live load moments but underestimates live load thrusts. An adjustment to the calculation of the thrusts is proposed. The Canadian design method estimates the moments relatively well but it does not cover larger spans than 8 m.

Keyword
Culverts, Buried structures, Field tests, Instrumentation, Composite structures, Structural response, Ultimate loads
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-13736 (URN)10.1061/(ASCE)BE.1943-5592.0000031 (DOI)000270914400009 ()2-s2.0-70350051195 (Scopus ID)
Note
QC 20100624Available from: 2010-06-24 Created: 2010-06-24 Last updated: 2017-12-12Bibliographically approved

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Citation style
  • apa
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Output format
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