Experimental Study of the Dynamic Characteristics of a New Antidrainage Subgrade Structure for High-Speed Railways in Diatomaceous Earth Areas
The experience needed to carry out engineering and construction in diatomaceous earth areas is currently lacking. This project studies the new Hang Shaotai high-speed railway passing through a diatomaceous earth area in Shengzhou, Zhejiang Province, and analyzes the hydrological and mechanical prope...
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| Veröffentlicht in: | Materials 2022-01, Vol.15 (2), p.532 |
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| description | The experience needed to carry out engineering and construction in diatomaceous earth areas is currently lacking. This project studies the new Hang Shaotai high-speed railway passing through a diatomaceous earth area in Shengzhou, Zhejiang Province, and analyzes the hydrological and mechanical properties of diatomaceous earth on the basis of a field survey and laboratory. Moreover, a new antidrainage subgrade structure was proposed to address the rainy local environment, and field excitation tests were performed to verify the antidrainage performance and stability of the new subgrade structure. Finally, the dynamic characteristics and deformation of the diatomaceous earth roadbed were examined. The hydrophysical properties of diatomaceous earth in the area are extremely poor, and the disintegration resistance index ranges from 3.1% to 9.0%. The antidrainage subgrade structure has good water resistance and stability under dynamic loading while submerged in water. After 700,000 loading cycles, the dynamic stress and vibration acceleration of the surface of the subgrade bed stabilized at approximately 6.37 kPa and 0.94 m/s
, respectively. When the number of excitations reached 2 million, the settlement of the diatomaceous earth foundation was 0.08 mm, and there was basically negligible postwork settlement of the diatomaceous earth foundation. These results provide new insights for engineering construction in diatomaceous earth areas. |
| doi_str_mv | 10.3390/ma15020532 |
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, respectively. When the number of excitations reached 2 million, the settlement of the diatomaceous earth foundation was 0.08 mm, and there was basically negligible postwork settlement of the diatomaceous earth foundation. These results provide new insights for engineering construction in diatomaceous earth areas.</description><subject>Acceleration</subject><subject>Construction</subject><subject>Construction engineering</subject><subject>Diatomaceous earth</subject><subject>Disintegration</subject><subject>Dynamic characteristics</subject><subject>Dynamic loads</subject><subject>Dynamic stability</subject><subject>Engineering</subject><subject>Excitation</subject><subject>Geology</subject><subject>High speed rail</subject><subject>Hydrology</subject><subject>Lice</subject><subject>Mechanical properties</subject><subject>Microscopy</subject><subject>Moisture content</subject><subject>Physical properties</subject><subject>Railroads</subject><subject>Railway engineering</subject><subject>Road beds</subject><subject>Shear tests</subject><subject>Subgrades</subject><subject>Water resistance</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkd9KHDEUxoMoKtYbH0ACvZHCtPkzmUluCsu6rQVRcO11OJvJ7ERmJtskU7sv0WduFq21novkwPnx5Xz5EDqj5CPninwagArCiOBsDx1TpaqCqrLcf9UfodMYH0guzqlk6hAdcUFEzQQ9Rr8XvzY2uMGOCXq8TFOzxb7FqbP4cjvC4AyedxDApEzF5EzcjQHf2Ec8G5NrArgR1hYvp9U6QJObFCaTpmBx6wO-cuuuWG6sbfAduP4RthG7EV86SH4AY_0U8QJC6vAsWIjv0EELfbSnz_cJ-v5lcT-_Kq5vv36bz64LU5IqFYq3irN8KC6z9dK0wGhTQS2pFJwY0fJa5bKEcVOrWgjW8FWpJAhpqprxE_T5SXczrQbbmGw_QK83-ScgbLUHp_-fjK7Ta_9Ty_wEIXUWuHgWCP7HZGPSg4vG9j2MO0-aVYwxWYtSZPT9G_TBT2HM9nYU5aWQFc_UhyfKBB9jsO3LMpToXdL6X9IZPn-9_gv6N1f-B1IKo78</recordid><startdate>20220111</startdate><enddate>20220111</enddate><creator>Su, Qian</creator><creator>Deng, Zhixing</creator><creator>Wang, Xun</creator><creator>Jia, Wenyi</creator><creator>Niu, Yunbin</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20220111</creationdate><title>Experimental Study of the Dynamic Characteristics of a New Antidrainage Subgrade Structure for High-Speed Railways in Diatomaceous Earth Areas</title><author>Su, Qian ; Deng, Zhixing ; Wang, Xun ; Jia, Wenyi ; Niu, Yunbin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c406t-93f9323f99380534cfa21d6a7818530c5f379999e023c797552d3b498a58c6723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Acceleration</topic><topic>Construction</topic><topic>Construction engineering</topic><topic>Diatomaceous earth</topic><topic>Disintegration</topic><topic>Dynamic characteristics</topic><topic>Dynamic loads</topic><topic>Dynamic stability</topic><topic>Engineering</topic><topic>Excitation</topic><topic>Geology</topic><topic>High speed rail</topic><topic>Hydrology</topic><topic>Lice</topic><topic>Mechanical properties</topic><topic>Microscopy</topic><topic>Moisture content</topic><topic>Physical properties</topic><topic>Railroads</topic><topic>Railway engineering</topic><topic>Road beds</topic><topic>Shear tests</topic><topic>Subgrades</topic><topic>Water resistance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Su, Qian</creatorcontrib><creatorcontrib>Deng, Zhixing</creatorcontrib><creatorcontrib>Wang, Xun</creatorcontrib><creatorcontrib>Jia, Wenyi</creatorcontrib><creatorcontrib>Niu, Yunbin</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</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 Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</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>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Su, Qian</au><au>Deng, Zhixing</au><au>Wang, Xun</au><au>Jia, Wenyi</au><au>Niu, Yunbin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental Study of the Dynamic Characteristics of a New Antidrainage Subgrade Structure for High-Speed Railways in Diatomaceous Earth Areas</atitle><jtitle>Materials</jtitle><addtitle>Materials (Basel)</addtitle><date>2022-01-11</date><risdate>2022</risdate><volume>15</volume><issue>2</issue><spage>532</spage><pages>532-</pages><issn>1996-1944</issn><eissn>1996-1944</eissn><abstract>The experience needed to carry out engineering and construction in diatomaceous earth areas is currently lacking. This project studies the new Hang Shaotai high-speed railway passing through a diatomaceous earth area in Shengzhou, Zhejiang Province, and analyzes the hydrological and mechanical properties of diatomaceous earth on the basis of a field survey and laboratory. Moreover, a new antidrainage subgrade structure was proposed to address the rainy local environment, and field excitation tests were performed to verify the antidrainage performance and stability of the new subgrade structure. Finally, the dynamic characteristics and deformation of the diatomaceous earth roadbed were examined. The hydrophysical properties of diatomaceous earth in the area are extremely poor, and the disintegration resistance index ranges from 3.1% to 9.0%. The antidrainage subgrade structure has good water resistance and stability under dynamic loading while submerged in water. After 700,000 loading cycles, the dynamic stress and vibration acceleration of the surface of the subgrade bed stabilized at approximately 6.37 kPa and 0.94 m/s
, respectively. When the number of excitations reached 2 million, the settlement of the diatomaceous earth foundation was 0.08 mm, and there was basically negligible postwork settlement of the diatomaceous earth foundation. These results provide new insights for engineering construction in diatomaceous earth areas.</abstract><cop>Switzerland</cop><pub>MDPI AG</pub><pmid>35057251</pmid><doi>10.3390/ma15020532</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Acceleration Construction Construction engineering Diatomaceous earth Disintegration Dynamic characteristics Dynamic loads Dynamic stability Engineering Excitation Geology High speed rail Hydrology Lice Mechanical properties Microscopy Moisture content Physical properties Railroads Railway engineering Road beds Shear tests Subgrades Water resistance |
| title | Experimental Study of the Dynamic Characteristics of a New Antidrainage Subgrade Structure for High-Speed Railways in Diatomaceous Earth Areas |
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