Punching Shear Strength of Isolated Concrete Column Footings with Low Shear Span-Depth Ratios
In the present research, an experimental study was performed to investigate the punching shear strength of isolated concrete column footings having low shear span-depth ratios (a/d). The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness. Twelve colum...
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| Veröffentlicht in: | ACI structural journal 2024-05, Vol.121 (3), p.25-41 |
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| creator | Dinh, Ngoc Hieu Noh, Juok Choi, Kyoung-Kyu Park, Hong-Gun |
| description | In the present research, an experimental study was performed to investigate the punching shear strength of isolated concrete column footings having low shear span-depth ratios (a/d). The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness. Twelve column footings were tested for a/d ranging from 1.0 to 2.5. A support system using rubber-wood composite blocks was designed to simulate the equivalent soil-bearing stiffness. The test results showed that as the a/d decreased, the punching shear strength of the footings significantly increased with a change in the angle of the punching failure surface. Contrarily, the soil-bearing stiffness did not significantly affect the punching shear strength, although it did affect the stiffness and deflection of the footings, as well as the contact pressure distribution beneath the footings. Furthermore, to evaluate the punching shear strength of footings with low a/d, an analytical model was proposed based on the web-shear cracking mechanism. Keywords: analytical model; design codes; punching shear; reinforced concrete (RC) footings; soil-bearing stiffness. |
| doi_str_mv | 10.14359/51740457 |
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The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness. Twelve column footings were tested for a/d ranging from 1.0 to 2.5. A support system using rubber-wood composite blocks was designed to simulate the equivalent soil-bearing stiffness. The test results showed that as the a/d decreased, the punching shear strength of the footings significantly increased with a change in the angle of the punching failure surface. Contrarily, the soil-bearing stiffness did not significantly affect the punching shear strength, although it did affect the stiffness and deflection of the footings, as well as the contact pressure distribution beneath the footings. Furthermore, to evaluate the punching shear strength of footings with low a/d, an analytical model was proposed based on the web-shear cracking mechanism. Keywords: analytical model; design codes; punching shear; reinforced concrete (RC) footings; soil-bearing stiffness.</description><identifier>ISSN: 0889-3241</identifier><identifier>EISSN: 0889-3241</identifier><identifier>EISSN: 1944-7361</identifier><identifier>DOI: 10.14359/51740457</identifier><language>eng</language><publisher>Farmington Hills: American Concrete Institute</publisher><subject>Codes ; Compressive strength ; Concrete ; Concrete columns ; Concrete properties ; Contact pressure ; Design ; Failure surface ; Investigations ; Mechanical properties ; Pressure distribution ; Punching shear ; Ratios ; Reinforced concrete ; Shear strength ; Shear tests ; Soil strength ; Soil testing ; Stiffness ; Support systems ; Testing ; Wood composites</subject><ispartof>ACI structural journal, 2024-05, Vol.121 (3), p.25-41</ispartof><rights>COPYRIGHT 2024 American Concrete Institute</rights><rights>Copyright American Concrete Institute May 2024</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Dinh, Ngoc Hieu</creatorcontrib><creatorcontrib>Noh, Juok</creatorcontrib><creatorcontrib>Choi, Kyoung-Kyu</creatorcontrib><creatorcontrib>Park, Hong-Gun</creatorcontrib><title>Punching Shear Strength of Isolated Concrete Column Footings with Low Shear Span-Depth Ratios</title><title>ACI structural journal</title><description>In the present research, an experimental study was performed to investigate the punching shear strength of isolated concrete column footings having low shear span-depth ratios (a/d). The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness. Twelve column footings were tested for a/d ranging from 1.0 to 2.5. A support system using rubber-wood composite blocks was designed to simulate the equivalent soil-bearing stiffness. The test results showed that as the a/d decreased, the punching shear strength of the footings significantly increased with a change in the angle of the punching failure surface. Contrarily, the soil-bearing stiffness did not significantly affect the punching shear strength, although it did affect the stiffness and deflection of the footings, as well as the contact pressure distribution beneath the footings. Furthermore, to evaluate the punching shear strength of footings with low a/d, an analytical model was proposed based on the web-shear cracking mechanism. Keywords: analytical model; design codes; punching shear; reinforced concrete (RC) footings; soil-bearing stiffness.</description><subject>Codes</subject><subject>Compressive strength</subject><subject>Concrete</subject><subject>Concrete columns</subject><subject>Concrete properties</subject><subject>Contact pressure</subject><subject>Design</subject><subject>Failure surface</subject><subject>Investigations</subject><subject>Mechanical properties</subject><subject>Pressure distribution</subject><subject>Punching shear</subject><subject>Ratios</subject><subject>Reinforced concrete</subject><subject>Shear strength</subject><subject>Shear tests</subject><subject>Soil strength</subject><subject>Soil testing</subject><subject>Stiffness</subject><subject>Support systems</subject><subject>Testing</subject><subject>Wood composites</subject><issn>0889-3241</issn><issn>0889-3241</issn><issn>1944-7361</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpNkE9LAzEQxRdRsFYPfoMFTx62Jpu_eyzVaqGgWD3Kkk0n7ZY2WZMsxW9vahVkDvN4vN8MvCy7xmiEKWHVHcOCIsrESTZAUlYFKSk-_afPs4sQNggRVBI6yD5eeqvXrV3lizUony-iB7uK69yZfBbcVkVY5hNntYcISWz7nc2nzsWEhHzfpuTc7f_gTtniHrpkvqrYunCZnRm1DXD1u4fZ-_ThbfJUzJ8fZ5PxvNBY4FhIrqWQpTQl0ppwwkCbsuINUMZFAwILiUA1vCoZ4YIKhjDFDaqw5EawCsgwuzne7bz77CHEeuN6b9PLmiDOKGMYy5QaHVMrtYW6tcZFr3SaJexa7SyYNvljUbFDg_QA3B4B7V0IHkzd-Xan_FeNUf1Td_1XN_kGfV1vPw</recordid><startdate>20240501</startdate><enddate>20240501</enddate><creator>Dinh, Ngoc Hieu</creator><creator>Noh, Juok</creator><creator>Choi, Kyoung-Kyu</creator><creator>Park, Hong-Gun</creator><general>American Concrete Institute</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7QQ</scope><scope>7SR</scope><scope>7XB</scope><scope>88I</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KR7</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope></search><sort><creationdate>20240501</creationdate><title>Punching Shear Strength of Isolated Concrete Column Footings with Low Shear Span-Depth Ratios</title><author>Dinh, Ngoc Hieu ; Noh, Juok ; Choi, Kyoung-Kyu ; Park, Hong-Gun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c171t-86c87828f20cc3635ecf296be4567be71780eab69253674750141b09186f759e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Codes</topic><topic>Compressive strength</topic><topic>Concrete</topic><topic>Concrete columns</topic><topic>Concrete properties</topic><topic>Contact pressure</topic><topic>Design</topic><topic>Failure surface</topic><topic>Investigations</topic><topic>Mechanical properties</topic><topic>Pressure distribution</topic><topic>Punching shear</topic><topic>Ratios</topic><topic>Reinforced concrete</topic><topic>Shear strength</topic><topic>Shear tests</topic><topic>Soil strength</topic><topic>Soil testing</topic><topic>Stiffness</topic><topic>Support systems</topic><topic>Testing</topic><topic>Wood composites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dinh, Ngoc Hieu</creatorcontrib><creatorcontrib>Noh, Juok</creatorcontrib><creatorcontrib>Choi, Kyoung-Kyu</creatorcontrib><creatorcontrib>Park, Hong-Gun</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><jtitle>ACI structural journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dinh, Ngoc Hieu</au><au>Noh, Juok</au><au>Choi, Kyoung-Kyu</au><au>Park, Hong-Gun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Punching Shear Strength of Isolated Concrete Column Footings with Low Shear Span-Depth Ratios</atitle><jtitle>ACI structural journal</jtitle><date>2024-05-01</date><risdate>2024</risdate><volume>121</volume><issue>3</issue><spage>25</spage><epage>41</epage><pages>25-41</pages><issn>0889-3241</issn><eissn>0889-3241</eissn><eissn>1944-7361</eissn><abstract>In the present research, an experimental study was performed to investigate the punching shear strength of isolated concrete column footings having low shear span-depth ratios (a/d). The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness. Twelve column footings were tested for a/d ranging from 1.0 to 2.5. A support system using rubber-wood composite blocks was designed to simulate the equivalent soil-bearing stiffness. The test results showed that as the a/d decreased, the punching shear strength of the footings significantly increased with a change in the angle of the punching failure surface. Contrarily, the soil-bearing stiffness did not significantly affect the punching shear strength, although it did affect the stiffness and deflection of the footings, as well as the contact pressure distribution beneath the footings. Furthermore, to evaluate the punching shear strength of footings with low a/d, an analytical model was proposed based on the web-shear cracking mechanism. Keywords: analytical model; design codes; punching shear; reinforced concrete (RC) footings; soil-bearing stiffness.</abstract><cop>Farmington Hills</cop><pub>American Concrete Institute</pub><doi>10.14359/51740457</doi><tpages>17</tpages></addata></record> |
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| subjects | Codes Compressive strength Concrete Concrete columns Concrete properties Contact pressure Design Failure surface Investigations Mechanical properties Pressure distribution Punching shear Ratios Reinforced concrete Shear strength Shear tests Soil strength Soil testing Stiffness Support systems Testing Wood composites |
| title | Punching Shear Strength of Isolated Concrete Column Footings with Low Shear Span-Depth Ratios |
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