China's first 3D printed resin landscape bridge completed by Shanghai Construction Machinery Group will be put into use in Shanghai. After the installation, the public can go to the Central Park of Taopu Zhichuang City, stand on the bridge and get in touch with this 15-meter-long large 3D printed work.
In the fields of education, medical care, and automobiles, 3D printing has been widely used. But 3D printing in the construction sector is in its infancy. What is the building fastness of 3D printing? How long can it last? Where is the advantage? At the Machine Digital Digital 3D Construction Center, we found the answer.
Dr. Chen Xiaoming, deputy chief engineer of the Construction Engineering Group and chief engineer of the Machine Group, said that the printing materials used in the 3D printed landscape bridge have undergone several comparisons and tests, and finally selected to be added to the ASA (an engineering plastic). Proportion of glass fiber, this material has high weather resistance, high modulus of elasticity, high yield strength and high impact strength, and can withstand long-term sun and rain, while meeting the requirements of 3D printed materials and building materials. To ensure that the strength and fastness of the bridge body are in line with national construction industry standards.
The resin bridge that will be put into use, the milky white bridge presents a beautiful streamlined shape, which will become a beautiful scenery of Taopu Zhichuang City Central Park. In the printing process, the machine group has adopted multiple pre-heating and thick heat preservation devices to improve the temperature of the printing work space through multiple printing tests and continuous optimization, and ensure the layer adhesion of the 3D printing materials. At the same time, the beat device is designed and developed. After several million beats, the printing effect was significantly improved.
The gantry composite 3D printing robot system developed by Ji Shi Group is the “contributor” of the successful completion of the first 3D landscape bridge in China. This system is mainly composed of 3-axis gantry structure, 6-axis high-precision industrial robot, high-speed extrusion device (CNC nozzle), which makes 3D printing more accurate, larger in size and more space structure to be satisfied. As a high-tech enterprise in Shanghai, Shanghai Construction Engineering Machinery Group's 3D printing equipment has reached the millimeter level, and the printing output is large and the stability is good. As a set of intelligent construction equipment, it can also realize intelligent manufacturing and material addition in the later stage. Integration.
3D printing is not only a brand new way of building, but also a subversion of traditional architectural patterns. At the landscape bridge 3D printing site, the printing robots methodically spit, beat and glue, not only the workers are small, but also the site is clean and tidy, no dust and construction waste are generated. In addition to the reduction of labor costs and the improvement of civilized construction, the entire landscape bridge printing took less than 40 days, and the intelligent construction made a big leap in speed.