{"id":9999,"date":"2021-12-15T10:01:11","date_gmt":"2021-12-15T02:01:11","guid":{"rendered":"https:\/\/cde.nus.edu.sg\/cee\/?page_id=9999"},"modified":"2022-09-23T14:55:40","modified_gmt":"2022-09-23T06:55:40","slug":"intelligent-lifting-frame-for-ppvc-and-precast-construction","status":"publish","type":"page","link":"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/built-environment\/intelligent-lifting-frame-for-ppvc-and-precast-construction\/","title":{"rendered":"Intelligent Lifting Frame for PPVC and Precast Construction"},"content":{"rendered":"\n\n\t\t\t\t\t<ul id=\"menu-research\"><li id=\"menu-item-13844\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/\">Research Clusters<\/a>\n<ul>\n\t<li id=\"menu-item-13848\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/built-environment\/\">Built Environment 4.0<\/a><\/li>\n\t<li id=\"menu-item-13847\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/ccm\/\">Climate Change Mitigation<\/a><\/li>\n\t<li id=\"menu-item-13846\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/environmental-sustainability\/\">Environmental Sustainability<\/a><\/li>\n\t<li id=\"menu-item-13845\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/ocean-infrastructure-and-renewables\/\">Ocean Infrastructure and Renewables<\/a><\/li>\n\t<li id=\"menu-item-13843\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/resilient-infrastructures\/\">Resilient Infrastructures<\/a><\/li>\n\t<li id=\"menu-item-13842\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/slc\/\">Smart and Liveable Cities<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-13849\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-centres\/\">Research Centres<\/a>\n<ul>\n\t<li id=\"menu-item-13850\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-centres\/centre-for-water-research\/\">Centre for Water Research<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-13852\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/laboratories\/\">Laboratories<\/a>\n<ul>\n\t<li id=\"menu-item-13851\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/laboratories\/structural-engineering-laboratory\/\">Structural Engineering Laboratory<\/a><\/li>\n\t<li id=\"menu-item-13853\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/laboratories\/environmental-engineering-laboratory\/\">Environmental Engineering Laboratory<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-13854\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/graduate\/graduate-research\/safety-health-committee\/\">Safety &#038; Health Committee<\/a><\/li>\n<li id=\"menu-item-13855\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/graduate\/graduate-research\/completed-research-projects\/\">Completed Research Projects<\/a><\/li>\n<li id=\"menu-item-13856\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-brief\/\">Research Brief<\/a><\/li>\n<li id=\"menu-item-13857\"><a href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/achievements-in-the-media\/\">Achievements (in the media)<\/a><\/li>\n<\/ul>\t\n\t<h2>\n\t\tIntelligent Lifting Frame for PPVC and Precast Construction\n\t<\/h2>\n\t<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/cde.nus.edu.sg\/wp-content\/uploads\/sites\/7\/2021\/12\/Lifting-Frame-Fig1-197x300.jpg\" alt=\"Lifting Frame Fig1\" width=\"242\" height=\"368\" \/><\/p>\n<p>The project specifically designs a lifting frame that can allow for the efficient installation of modular units in prefabricated prefinished volumetric construction (PPVC).\u00a0 There are two objectives to this lifting frame.\u00a0 It has an anti-sway control so that the orientation of the modular units can be controlled. In this way, the payload can reach the planned destination in a minimum time with less sway. The project also addresses issues related to alignment and adjustment just before installation as findings show that the bulk of the time is taken when trying to fit the unit into its final placement. This is achieved through autoleveling and fine lateral adjustments of the modular frame using the lifting frame.<\/p>\n<p>In order to move the PPVC more effectively and accurately, we propose to install an intelligent frame that is able to move the PPVC.<\/p>\n<p>In this project, a full-scale prototype of an intelligent frame that comprises the self-leveling, anti-sway, and lateral adjustment systems. Apart from ensuring that a PPVC module is level during the hoisting process, the self-balancing system will also keep the module level as it is lowered into position. With closed loop control algorithms, it will respond to additional offsets to the centre-of-gravity of the lifting frame and\/or the module that are caused by adjustments for anti-sway and lateral positioning.<\/p>\n<p>A table prototype is being built to define the design of the anti-sway, self-leveling and lateral adjustment mechanisms. This will then be scaled to a 1-ton prototype and eventually to the full scale prototype with a payload of 30 tons.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/cde.nus.edu.sg\/wp-content\/uploads\/sites\/7\/2021\/12\/Lifting-Frame-Fig2.jpg\" alt=\"Lifting Frame Fig2\" width=\"656\" height=\"410\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>For more details, please contact:<br \/><a href=\"https:\/\/cde.nus.edu.sg\/cee\/staff\/chua-kim-huat-david\/\" target=\"_blank\" rel=\"noopener\"><strong>Prof Chua Kim Huat, David<\/strong><\/a><br \/>Email: <a href=\"mailto:ceedavid@nus.edu.sg\" target=\"_blank\" rel=\"noopener\">ceedavid@nus.edu.sg<\/a><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Research Clusters Built Environment 4.0 Climate Change Mitigation Environmental Sustainability Ocean Infrastructure and Renewables Resilient Infrastructures Smart and Liveable Cities Research Centres Centre for Water Research Laboratories Structural Engineering Laboratory Environmental Engineering Laboratory Safety &#038; Health Committee Completed Research Projects Research Brief Achievements (in the media) Intelligent Lifting Frame for PPVC and Precast Construction The [&hellip;]<\/p>\n","protected":false},"author":54,"featured_media":9438,"parent":9980,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-9999","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Intelligent Lifting Frame for PPVC and Precast Construction - Civil and Environmental Engineering | NUS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cde.nus.edu.sg\/cee\/research\/research-clusters\/built-environment\/intelligent-lifting-frame-for-ppvc-and-precast-construction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Intelligent Lifting Frame for PPVC and Precast Construction - Civil and Environmental Engineering | NUS\" \/>\n<meta property=\"og:description\" content=\"Research Clusters Built Environment 4.0 Climate Change Mitigation Environmental Sustainability Ocean Infrastructure and Renewables Resilient Infrastructures Smart and Liveable Cities Research Centres Centre for Water Research Laboratories Structural Engineering Laboratory Environmental Engineering Laboratory Safety &#038; 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