Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading
In Lebanon and many other countries where structures are vulnerable to impact loads caused by accidental rock falls due to landslides, specifically bridges with hollow core slab, it is mandatory to develop safe and efficient design procedures to design such types of structures to withstand extreme c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/2/599 |
| _version_ | 1797492412084387840 |
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| author | Kamal Amin Chebo Yehya Temsah Zaher Abou Saleh Mohamad Darwich Ziad Hamdan |
| author_facet | Kamal Amin Chebo Yehya Temsah Zaher Abou Saleh Mohamad Darwich Ziad Hamdan |
| author_sort | Kamal Amin Chebo |
| collection | DOAJ |
| description | In Lebanon and many other countries where structures are vulnerable to impact loads caused by accidental rock falls due to landslides, specifically bridges with hollow core slab, it is mandatory to develop safe and efficient design procedures to design such types of structures to withstand extreme cases of loading. The structural response of concrete members subjected to low velocity high falling weight raised the interest of researchers in the previous years. The effect of impact due to landslide falling rocks on reinforced concrete (RC) slabs has been investigated by many researchers, while very few studied the effect of impact loading on pre-stressed structures, noting that a recent study was conducted at Beirut Arab University which compared the dynamic behavior of reinforced concrete and post-tensioned slabs under impact loading from a 605 kg impactor freely dropped from a height of 20 m. Hollow core slabs are widely used in bridges and precast structures. Thus, studying their behavior due to such hazards becomes inevitable. This study focuses on these types of slabs. For a better understanding of the behavior, a full scale experimental program consists of testing a single span hollow core slab. The specimen has 6000 mm × 1200 mm × 200 mm dimensions with a 100 mm cast in a place topping slab. Successive free fall drops cases from 14 m height will be investigated on the prescribed slab having a span of 6000 m. This series of impacts will be held by hitting the single span hollow core slab at three different locations: center, edge, and near the support. The data from the testing program were used to assess the structural response in terms of experimental observations, maximum impact and inertia forces, structural damage/failure: type and pattern, acceleration response, and structural design recommendations. This research showed that the hollow core slab has a different dynamic behavior compared to the post tensioned and reinforced concrete slabs mentioned in the literature review section. |
| first_indexed | 2024-03-10T01:02:21Z |
| format | Article |
| id | doaj.art-35623f5965da4d35964a491c71c09f4d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:02:21Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-35623f5965da4d35964a491c71c09f4d2023-11-23T14:31:46ZengMDPI AGMaterials1996-19442022-01-0115259910.3390/ma15020599Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact LoadingKamal Amin Chebo0Yehya Temsah1Zaher Abou Saleh2Mohamad Darwich3Ziad Hamdan4Civil and Environmental Engineering, Beirut Arab University, Beirut 1001, LebanonCivil and Environmental Engineering, Beirut Arab University, Beirut 1001, LebanonCivil and Environmental Engineering, University of Balamad Dubai, Dubai 00000, United Arab EmiratesCivil and Environmental Engineering, Beirut Arab University, Beirut 1001, LebanonCivil and Environmental Engineering, Lebanese University, Tripoli 1300, LebanonIn Lebanon and many other countries where structures are vulnerable to impact loads caused by accidental rock falls due to landslides, specifically bridges with hollow core slab, it is mandatory to develop safe and efficient design procedures to design such types of structures to withstand extreme cases of loading. The structural response of concrete members subjected to low velocity high falling weight raised the interest of researchers in the previous years. The effect of impact due to landslide falling rocks on reinforced concrete (RC) slabs has been investigated by many researchers, while very few studied the effect of impact loading on pre-stressed structures, noting that a recent study was conducted at Beirut Arab University which compared the dynamic behavior of reinforced concrete and post-tensioned slabs under impact loading from a 605 kg impactor freely dropped from a height of 20 m. Hollow core slabs are widely used in bridges and precast structures. Thus, studying their behavior due to such hazards becomes inevitable. This study focuses on these types of slabs. For a better understanding of the behavior, a full scale experimental program consists of testing a single span hollow core slab. The specimen has 6000 mm × 1200 mm × 200 mm dimensions with a 100 mm cast in a place topping slab. Successive free fall drops cases from 14 m height will be investigated on the prescribed slab having a span of 6000 m. This series of impacts will be held by hitting the single span hollow core slab at three different locations: center, edge, and near the support. The data from the testing program were used to assess the structural response in terms of experimental observations, maximum impact and inertia forces, structural damage/failure: type and pattern, acceleration response, and structural design recommendations. This research showed that the hollow core slab has a different dynamic behavior compared to the post tensioned and reinforced concrete slabs mentioned in the literature review section.https://www.mdpi.com/1996-1944/15/2/599precast slabsuccessive impact loadconcrete damagescracksdynamic response |
| spellingShingle | Kamal Amin Chebo Yehya Temsah Zaher Abou Saleh Mohamad Darwich Ziad Hamdan Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading Materials precast slab successive impact load concrete damages cracks dynamic response |
| title | Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading |
| title_full | Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading |
| title_fullStr | Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading |
| title_full_unstemmed | Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading |
| title_short | Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading |
| title_sort | experimental investigation on the structural performance of single span hollow core slab under successive impact loading |
| topic | precast slab successive impact load concrete damages cracks dynamic response |
| url | https://www.mdpi.com/1996-1944/15/2/599 |
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