University research supporting complex strengthening and renewal projects.
Our origins date to Jiangsu Southeast New Technology Engineering Co., Ltd. for Building Strengthening and Retrofit, established in 1994. Drawing on Southeast University's academic expertise and long-term collaboration with civil engineering professors and researchers, we connect structural, geotechnical and heritage research with practice to improve the safety, adaptability and conservation of existing buildings.
Our work addresses building tilt and differential settlement, load-capacity upgrades, changes of use and heritage conservation. Services cover foundation strengthening, relocation and lifting, structural strengthening, concrete replacement, heritage repair, and steel and bridge strengthening. For occupied industrial and commercial facilities, design, phased construction and monitoring are coordinated subject to project-specific assessment.
Connecting university research and engineering practice
Through industry–university research collaboration, a postgraduate practice base, joint studies and practical teaching, we connect Southeast University's research with construction sites. Real challenges in tilt correction, strengthening and heritage conservation inform technical research, professional training and application.
Research collaboration involving the China–Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures focuses on seismic strengthening, settlement and crack diagnosis, precision control and remediation. Our contribution as a chief drafting organization to the Technical Specification for Lifting and Tilt Correction of High-Rise Buildings brings engineering and research experience into technical standards.
University specialists contribute expertise in structural analysis, foundations, prestressing, steel structures and heritage conservation. These disciplines, combined with site experience, support technical studies, scheme assessment and construction control for complex projects.
China–Pakistan technical cooperation and research exchange
We collaborate with Southeast University and participate in China–Pakistan technical cooperation and exchange, sharing experience in structural engineering and smart disaster prevention.
Turning research into solutions for real engineering problems
Building on the work of the Nanjing Engineering Research Center for Building Tilt Correction and Strengthening Technology, we study deformation, structural forces and construction-stage control. Patented methods, intelligent control and field monitoring support both scheme development and implementation.
Coordinating engineering and specialist design
Our engineering and site work covers building tilt correction and relocation, structural strengthening and the strengthening of historic structures.
Our wholly owned design subsidiary holds Class A structural design firm qualifications and participated in drafting the Technical Specification for Lifting and Tilt Correction of High-Rise Buildings.
Engineering awards reflecting innovation in practice
A project for which Dongnan was the sole strengthening contractor received the 21st China Civil Engineering Zhan Tianyou Award. It demonstrates the application of technical research to complex settlement remediation, tilt correction, strengthening and construction control.
Diagnosis, Precision Control and Remediation Technologies for Settlement and Cracks in Engineering Structures received a Second Prize for Technological Innovation from the China Association for the Promotion of Science and Technology Commercialization. Dongnan completed the work jointly with Southeast University and other organizations. The Qingguo Lane conservation project involving our design subsidiary received a Second Prize in Traditional Architectural Design in an industry survey and design awards program.
Patents and software: translating accumulated expertise into engineering tools
Our research covers tilt correction, foundation and structural strengthening, concrete replacement and construction equipment. Company records contain 49 patent grant records: 18 inventions and 31 utility models, covering control methods, member strengthening, equipment and field monitoring.
Three software copyright registrations cover automatic tilt-correction control for high-rise buildings, displacement early warning for foundation strengthening equipment, and monitoring during emergency strengthening of historic buildings.
Standards: translating engineering experience into technical guidance
We were a chief drafting organization for T/CI 240—2023, Technical Specification for Lifting and Tilt Correction of High-Rise Buildings, effective 21 December 2023, together with the associated joint laboratory. Our design subsidiary also contributed.
Together with China University of Mining and Technology, we were a chief drafting organization for the Jiangsu provincial standard DB32/T 4398—2022, Technical Standard for Building Tilt Correction by Soil Extraction, effective 1 May 2023.
Standards involving the company and its technical team include GB 55021—2021, GB 50367—2013, JGJ 270—2012, T/CECS 225—2020 and T/CECS 295—2023, covering assessment, strengthening, tilt correction, relocation, additional storeys and underpinning.
The draft CECS specification for lifting, controlled-settlement tilt correction and strengthening of existing high-rise buildings, jointly led with Southeast University, passed expert review on 15 October 2026 and is being revised for approval. The emergency strengthening specification for historic buildings was recommended as a 2023–2024 key standards project. Draft-review and recommendation milestones are distinguished from standards already in force.
We were a chief drafting organization for T/NAIC 008—2024, Technical Specification for Emergency Strengthening of Historic Buildings, and T/NAIC 009—2024, Technical Specification for Repair and Strengthening of Historic City Walls. The former was recommended as a 2023–2024 key standards project.
Research platforms and experts connecting universities and project sites
In 2020, the Nanjing Development and Reform Commission awarded the company a plaque for the Nanjing Engineering Research Center for Building Tilt Correction and Strengthening Technology, supporting studies of existing-building tilt, structural forces and construction control.
In 2021, the Jiangsu Department of Science and Technology awarded the company a plaque for the Nanjing Engineering Research Center for Building Tilt Correction and Strengthening Technology.
Drawing on Southeast University through postgraduate practice, joint research and academic exchange, we connect structural, geotechnical, steel and heritage expertise. Our specialists contribute to scheme assessment and engineering research, linking academic work, design, intelligent control and site implementation.
Specialist capabilities supported by qualifications
The company holds specialist engineering contracting qualifications for tilt correction, relocation and structural strengthening, and Grade II heritage conservation construction qualifications. Our wholly owned subsidiary, Jiangsu Southeast Architectural Engineering Structural Design Firm Co., Ltd., holds Class A structural design firm qualifications.
In 2025, the company was recognized as a High-Tech Enterprise and selected as a Jiangsu Specialized and Innovative SME. Our research center supports continued investigation of complex engineering problems and application of research outcomes.
Bringing technical expertise back to the project site
From high-rise residential tilt correction and public-building renewal to industrial, commercial and heritage projects, we coordinate design, construction and monitoring around each building's structure and use. Research helps address restricted space, complex force transfer and continued-use constraints at every stage.
Collaboration starts with understanding your needs
Whether a building is deforming or you are planning a change of use, higher loads or conservation repairs, the first step is to assemble the available information and describe its current condition.