CN-122014037-A - 3D printing dismantling-free template silo structure and construction method thereof

CN122014037ACN 122014037 ACN122014037 ACN 122014037ACN-122014037-A

Abstract

The invention is suitable for the field of silo construction, in particular to a 3D printing dismantling-free template silo structure and a construction method thereof, wherein the dismantling-free template, a reinforcement cage and concrete are manufactured by adopting a layer-by-layer stacking on-site printing process; the disassembly-free template is arranged into an inner layer and an outer layer, a pouring interlayer used for placing a plurality of reinforcement cages is formed between the two layers of disassembly-free templates, template reinforcing ribs are integrally printed on the disassembly-free templates, concrete is poured into the pouring interlayer, and the concrete is combined with the plurality of reinforcement cages to form an integral silo wall. According to the invention, a 3D printing technology is introduced into the construction field of the silo structure, so that continuous concrete pouring of the silo is realized, the perpendicularity of the template is effectively controlled, the concrete forming quality is ensured, the construction quality and efficiency of the silo are improved, the horizontal lifting of the industrialized construction of the silo is promoted, and the technical problems that the concrete surface is uneven, quality defects are easily generated at the joint of the template, the concrete forming quality is difficult to accurately control and the like in the existing silo slip form construction process are solved.

Inventors

SUN XUEJUN
WU PING
YANG YANG
CHEN LONGSHENG
WANG ZHONGHE
ZHANG LIANG
ZHOU TING

Assignees

中煤第三建设（集团）有限责任公司
中煤矿山建设集团有限责任公司
中煤矿建(安徽)科技有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (10)

1. The 3D printing dismantling-free template silo structure is characterized by comprising a dismantling-free template (1), a reinforcement cage (5) and concrete (4) which are manufactured by adopting a layer-by-layer stacking on-site printing process; The non-dismantling formwork (1) is arranged into an inner layer and an outer layer, a pouring interlayer for placing a plurality of reinforcement cages (5) is formed between the two layers of non-dismantling formworks (1), and a formwork reinforcing rib (2) is integrally printed on one side, facing the pouring interlayer, of the non-dismantling formworks (1); a plurality of reinforcement cages (5) are hoisted and placed in a pouring interlayer, and the reinforcement cages (5) are mutually bound and connected; And concrete (4) is poured in the pouring interlayer in a site pumping construction mode, and the concrete (4) is combined with a plurality of reinforcement cages (5) to form an integral silo wall.
2. The 3D printing disassembly-free formwork silo structure of claim 1, wherein the widths of the disassembly-free formwork (1) and the formwork reinforcing ribs (2) are both a, and the length of each formwork reinforcing rib (2) along the extension direction of the disassembly-free formwork (1) is b. In the same horizontal plane, a plurality of template reinforcing ribs (2) on the inner wall of one of the disassembly-free templates (1) are arranged at equal intervals, the interval is e, and the same number of template reinforcing ribs (2) are correspondingly arranged on the inner wall of the other disassembly-free template (1) at equal intervals; In the same horizontal plane, a plurality of template reinforcing ribs (2) on the inner wall of the two detachable templates (1) are arranged in a staggered mode, and the distance between any two adjacent template reinforcing ribs (2) is e/2.
3. The 3D printing disassembly-free formwork silo structure of claim 2, wherein the formwork reinforcing ribs (2) are provided with additional tie bars (3), the additional tie bars (3) are in an I shape, the length of the additional tie bars (3) is c, and the width of the end parts of the additional tie bars (3) is D; One end of the additional tie bar (3) is placed on the template reinforcing rib (2), and the placing length of the end is f; the other end of the additional tie bar (3) is placed on the disassembly-free template (1) opposite to the template reinforcing rib (2), and the placing length of the end is g; On the same template reinforcing rib (2), a plurality of additional tie bars (3) are arranged at equal intervals along the vertical direction, and the interval is e/2.
4. The 3D printing tamper-evident form silo structure of claim 3, wherein, The width a=3 cm of the template reinforcing rib (2), and the length b=6 cm of the template reinforcing rib (2); the length of the additional tie bars (3) is c=the thickness of the silo wall body +3cm; the width of the end part of the additional tie bar (3) is d=10cm; The rest lengths of the two ends of the additional tie bar (3) are f=4cm and g=2cm respectively. And e=2m.
5. The 3D printing form silo structure of claim 3 wherein the construction system comprises, A support system for mounting the 3D printing device (13) and the power system; The 3D printing equipment (13) is used for printing two detachable templates (1) and corresponding template reinforcing ribs (2) respectively; a power system comprising a lifting system for driving the 3D printing device (13) to move in a vertical direction, and a rotating system for driving the 3D printing device (13) to move along a predetermined circular track; Wherein, the The support system comprises a support rod (6) fixed at a preset position, a hydraulic jack (8) and a construction work platform (9) which are arranged at the top of the support rod (6), wherein the construction work platform (9) is provided with a protection guardrail (10) and a hanging bracket (11); The 3D printing device (13) comprises two printing arms (14), and each printing arm (14) is provided with a printing spray head (15); The lifting system comprises a lifting frame (7) supported on top of a hydraulic jack (8); The rotating system comprises a sliding rail (12) fixed at the bottom of the 3D printing device (13).
6. The 3D printing form removal-free silo structure of any of claims 1-5, wherein the construction method comprises the steps of: S1, finishing construction preparation; s2, installing and constructing system S3, installing a reinforcement cage (5) at a preset position and marking the installation position of the additional tie reinforcement (3); s4, executing 3D printing construction actions; S41, finishing the 3D printing construction of the dismantling-free template (1) with a preset height once; S42, finishing the installation of the corresponding additional tie bars (3) at the preset positions in the printing process; S5, pouring concrete; S6, climbing a system: S7, the working procedure is circulated, and S3-S6 are repeated; and S8, finishing construction.
7. The construction method of a 3D printing disassembly-free formwork silo structure of claim 6, wherein in S1, the construction preparation comprises: the construction of the wall embedded steel bars comprises concrete pouring construction of a silo foundation slab and construction of embedded longitudinal steel bars; Template positioning and interface processing, including construction position positioning of the dismantling-free template (1); The construction cleaning treatment comprises roughening treatment on the interface between the disassembly-free template (1) and the foundation slab and cleaning the interface after roughening.
8. The construction method of a 3D printing disassembly-free formwork silo structure of claim 7, wherein in S2, installing a construction system comprises: s21, installing a lifting frame (7), a hydraulic jack (8) and a supporting rod (6) at a preset position; s22, comprehensively debugging the synchronous lifting performance of the hydraulic jack (8); s23, erecting a construction work platform (9), installing a protective guardrail (10) on the outer side of the work platform (9), and hanging a hanging bracket (11) on the lower part of the work platform (9); s24, two parallel sliding rails (12) are arranged on the lifting frame (7), the sliding rails (12) are circumferentially arranged along the cylinder wall, and 3D printing equipment (13) is arranged at the bottom of the sliding rails (12).
9. The method for constructing a 3D printing non-dismantling formwork silo structure of claim 8, wherein, In S41: the system control 3D printing equipment (13) prints two detachable templates (1) and a plurality of corresponding template reinforcing ribs (2) layer by layer according to the preset annular printing path, thickness and arrangement requirements of the template reinforcing ribs (2) through two printing arms (14) and two printing spray heads (15); the preset printing height of the detachable template (1) is 60cm each time; In S42: manually installing additional tie bars (3) at preset positions, wherein the additional tie bars (3) penetrate through the corresponding reinforcement cages (5) and are bound and fixed with the corresponding reinforcement cages (5); When the printing spray head (15) rotates to the end part of the additional tie bar (3) again, the printing material covers the laying end of the additional tie bar (3) so that the laying end of the additional tie bar (3) is fixedly connected with the disassembly-free template (1).
10. The method for constructing a 3D printing non-dismantling formwork silo structure of claim 9, wherein, In S5, filling concrete (4) is poured into the pouring interlayer, and in the pouring process, the pouring thickness of each layer is 20cm, and the layers are evenly discharged; In S6, after the poured concrete reaches preset strength, driving the lifting frame (7), the 3D printing equipment (13) and the construction work platform (9) to climb upwards synchronously through the hydraulic jack (8); in S7, repeating S3-S6 for a plurality of times to finish the printing construction of the preset high dismantling-free template (1) and the printing construction of a plurality of corresponding template reinforcing ribs (2), thereby finishing the construction of the whole silo structure.

Description

3D printing dismantling-free template silo structure and construction method thereof Technical Field The invention belongs to the field of silo construction, and particularly relates to a 3D printing dismantling-free template silo structure and a construction method thereof. Background Along with the continuous improvement of the resource storage demand of China and the continuous innovation, popularization and application of new technology and new equipment, the silo structure is widely applied in the construction of modern resource storage facilities by virtue of the remarkable advantages of high space utilization rate, excellent stress performance, high mechanical degree of material entering and exiting the silo, stable storage effect and the like. Currently, a slipform construction technology is widely adopted as a mainstream technology for the construction of the bin wall. The slip form construction is a construction process for realizing concrete cast-in-situ forming by continuously ascending a formwork system, has the characteristics of high construction efficiency, strong process continuity, quick formwork turnover and the like, and is particularly suitable for construction of high-rise structures such as silos, piers and the like. However, when the slip form construction is adopted, the formwork is tightly attached to the surface of the concrete warehouse wall all the time and slides upwards synchronously with the concrete pouring. Therefore, the perpendicularity, the lifting speed and the concrete setting time of the template can directly influence the concrete forming quality. For example, uneven sliding and lifting of the template can easily cause uneven concrete surface and deviation of structural verticality, and when serious, the lifting of an operation platform can be blocked, so that the integral safety of the structure is endangered, excessive splicing seams of the template can easily cause concrete leakage and even leakage of a bin wall, and the quality defects such as stretch cracking, pitting surface, scum and the like can be caused on the concrete surface due to improper lifting speed control of the template. In the field of building construction, the 3D printing technology is increasingly focused by students and engineering technicians at home and abroad by virtue of a precise and controllable printing path, and the 3D printing template can effectively ensure the flatness of a wall body and the dimensional accuracy of a component, and the compact and seamless disassembly-free template can be well combined with cast-in-place concrete, so that the molding quality of the concrete is ensured, and the impermeability and the frost resistance of the structure are obviously improved. However, the existing 3D printing template technology mostly adopts a factory prefabricated segmented template and a field assembly construction mode, and has not been applied and practiced in the in-situ construction of a silo structure. In order to solve the problems, a 3D printing construction method which can realize continuous concrete pouring of a silo, effectively control the perpendicularity of a template and ensure the molding quality of the concrete is required to be studied. The invention fully plays the advantages of regular modeling and high standardization of the silo structure, introduces the 3D printing technology into the silo structure construction field, and provides a new research direction and technical thought for improving the silo industrialized construction level. Disclosure of Invention The embodiment of the invention aims to provide a 3D printing disassembly-free template silo structure, which aims to solve the quality problems caused by concrete pouring due to uneven sliding lifting of templates, such as uneven concrete surface, easy quality defect at a template joint, difficult accurate control of concrete forming quality and the like. The invention provides a 3D printing dismantling-free template silo structure, which comprises a dismantling-free template, a reinforcement cage and concrete, wherein the dismantling-free template, the reinforcement cage and the concrete are manufactured by adopting a layer-by-layer stacking on-site printing process; The disassembly-free template is arranged into an inner layer and an outer layer, a pouring interlayer for placing a plurality of reinforcement cages is formed between the two layers of disassembly-free templates, and template reinforcing ribs are integrally printed on one side, facing the pouring interlayer, of the disassembly-free template; a plurality of reinforcement cages are hoisted and placed in the pouring interlayer, and the reinforcement cages are mutually bound and connected; And concrete is poured in the pouring interlayer in an on-site pumping construction mode, and the concrete is combined with a plurality of reinforcement cages to form an integral silo wall. Preferably, the widths of the disassembly-free template and the temp