With the rapid development of modern architecture towards multi-functionality and integration, significant differences in vertical functional allocation or varying spatial requirements within the same building often result in structural column grids on upper and lower floors failing to perfectly align. In collaboration with East China Architecture Design & Research Institute Co., Ltd., our company has proposed a non-insertion short steel beam-column conversion node construction technology suitable for the aforementioned scenarios through technological research and process innovation. This technology has passed the appraisal of scientific and technological achievements, reaching an internationally advanced level overall, and has been recognized as one of Zhejiang Province's scientific and technological achievements (Registration Number: DJ101002023Y0477). During the construction process, a patent titled "Temporary Bracket for Steel Structures" (Patent Number: 202222496709.8) was also summarized and obtained. By adopting an optimized node embedded with short steel beams inside concrete beams, eliminating continuous steel beams, it achieves a refined design principle of "strong nodes, weak members". Through practical application in projects, this method demonstrates significant advantages such as reducing steel usage, optimizing rebar connections, and facilitating construction. The "New Non-Insertion Short Steel Beam-Column Conversion Node Construction Method" won the "2024 Outstanding Provincial Construction Method in Zhejiang Province".

 1、Construction Technology of Ultra-long Steel Pipe Columns Using Top-down Method

For underground construction in bustling areas facing issues like limited space, high support costs, long construction periods, and complex working conditions, traditional construction methods would undoubtedly exacerbate these problems. The application of this technology effectively alleviates these challenges, significantly enhancing the safety of underground engineering, greatly reducing project costs, shortening construction periods, and preventing subsidence of surrounding foundations, demonstrating great potential for development and promotion.

Construction Technology of Ultra-long Steel Pipe Columns Using Top-down Method

2、Processing and Construction Technology for Extra-large Box-type Y-shaped Variable Section Steel Columns

In outdoor parts of steel structure buildings, some projects use special-shaped columns, such as Y-shaped columns, to support structures like roofs and dome walkways. Y-shaped columns are generally fabricated in sections and welded on-site. To achieve better visual effects, the processing difficulty of steel columns increases. Moreover, due to their heavy weight and difficult center of gravity positioning, Y-shaped steel columns are prone to twisting and swinging during hoisting, increasing the difficulty and safety requirements for installation. Processing and construction technology for extra-large box-type Y-shaped variable section steel columns effectively addresses these challenges.

Processing and Construction Technology for Extra-large Box-type Y-shaped Variable Section Steel Columns

3、Hydraulic Integrated Lifting Construction Technology

Hydraulic lifting construction technology is widely applied in large-span spatial structures such as airports, high-speed railway stations, and exhibition centers. These structures typically use truss designs, but due to their large span, volume, and weight, along with complex construction site conditions and high installation precision requirements, hydraulic integrated lifting construction technology has been developed to address these challenges, facilitating installation within or above buildings.

Large-span Steel Truss Structure Hydraulic Integrated Lifting Technology

4、Track Sliding Hoisting Technology

Spatial steel pipe trusses are important members of large-span spatial structures, known for their aesthetic appeal and ability to meet architectural requirements. Their reasonable force characteristics ensure safety, applicability, and economy. However, given their large spans, volumes, and high installation accuracy requirements, track sliding hoisting technology has been designed to facilitate safe and efficient assembly at high altitudes, overcoming limitations of traditional full-scaffold construction methods.

Large-span Steel Pipe Truss Track Sliding Support Frame Hoisting Technology

5、Truss Joint Adjustment Technology

When joining steel trusses, corresponding position adjustments are usually made to avoid issues associated with aerial jointing. Compared to traditional methods, this adjustment technology offers better stability and higher efficiency, without requiring crane assistance, thus significantly improving construction safety.

6、Prefabricated H-beam Connection Structure Construction Technology

To address the complexity of prefabricated H-beam connection nodes, we have conducted technological research. This construction technology eliminates the need for sliding insertion, saving installation space for steel beams. By adjusting devices according to the size of H-beams, it can accommodate various sizes, offering high adaptability and easy installation without repeated drilling operations.

Prefabricated H-beam Connection Structure

7、Prefabricated Steel Truss Buffer Hysteresis Support Structure Construction Technology

To solve the issue of large loads on cantilevered steel truss roofs in large venues, which require buffer structures to transfer and dissipate forces outward, a prefabricated steel truss buffer hysteresis support structure construction technology has been researched. By utilizing bottom pull rods and top buffers, this technology provides damping against both vertical and lateral movements, mitigating stress and protecting the steel structure.

Prefabricated Steel Truss Buffer Hysteresis Support Structure

8、Wooden Composite Floor Deck Assembly Platform Technology

To overcome the challenge of assembling removable floor decks using welding equipment for steel bar truss floor decks, we developed a new platform that controls the back-and-forth sliding of movable supports, allowing the lower chords of the steel bar trusses to be opened or closed, quickly completing the assembly of removable wooden floor decks, thereby greatly facilitating construction.

Wooden Composite Floor Deck Assembly Platform Technology