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A platform for research: civil engineering, architecture and urbanism
Prefabricated part interface direct shear reinforced vertical hole, prefabricated part with vertical hole and preparation thereof
The invention discloses a prefabricated part interface direct shear reinforced vertical hole, a prefabricated part with the vertical hole and preparation thereof. The section size of the vertical hole is changed at the lower part of a vertical hole steel bar lap joint section of the prefabricated hollow part, and a frustum or a boss is formed on the inner wall of the vertical hole. The frustum can increase the normal stress of new and old concrete interfaces when vertical steel bars are pulled, so that the shearing force transmission capacity of the new and old concrete interfaces of the vertical hole is improved through the friction effect; and the position of the boss can improve the shearing force transmission capacity of the new and old concrete interfaces of the vertical hole through the meshing effect of new and old concrete. The situation that a washing rough surface or a key groove is formed in the vertical hole of the prefabricated hollow part to improve the interface shearing force transmission capacity can be avoided, meanwhile, the frustum or the boss can be formed through one-time overall core pulling of a matched vertical hole core mold or formed through pipeline occupying, complex mechanical equipment does not need to be adopted, the fault rate of production equipment can be reduced, and the production efficiency of the prefabricated hollow part is ensured.
预制构件界面直剪加强型竖孔、带有该竖孔的预制构件及其制备，在预制空心构件竖孔钢筋搭接区段下部改变竖孔截面尺寸，在竖孔内壁形成锥台或凸台。锥台可在竖向钢筋受拉时增大新旧混凝土界面的正应力，进而通过摩擦作用提高竖孔新旧混凝土界面的剪力传递能力；凸台位置可通过新旧混凝土的咬合作用提高竖孔新旧混凝土界面的剪力传递能力。本发明可避免在预制空心构件竖孔内设置水洗粗糙面或键槽来改善界面剪力传递能力，同时本发明锥台或凸台可采用配套的竖孔芯模一次整体抽芯形成或采用管道占位形成，无需采用复杂机械设备，可降低生产设备的故障率，保证预制空心构件生产效率。
Prefabricated part interface direct shear reinforced vertical hole, prefabricated part with vertical hole and preparation thereof
The invention discloses a prefabricated part interface direct shear reinforced vertical hole, a prefabricated part with the vertical hole and preparation thereof. The section size of the vertical hole is changed at the lower part of a vertical hole steel bar lap joint section of the prefabricated hollow part, and a frustum or a boss is formed on the inner wall of the vertical hole. The frustum can increase the normal stress of new and old concrete interfaces when vertical steel bars are pulled, so that the shearing force transmission capacity of the new and old concrete interfaces of the vertical hole is improved through the friction effect; and the position of the boss can improve the shearing force transmission capacity of the new and old concrete interfaces of the vertical hole through the meshing effect of new and old concrete. The situation that a washing rough surface or a key groove is formed in the vertical hole of the prefabricated hollow part to improve the interface shearing force transmission capacity can be avoided, meanwhile, the frustum or the boss can be formed through one-time overall core pulling of a matched vertical hole core mold or formed through pipeline occupying, complex mechanical equipment does not need to be adopted, the fault rate of production equipment can be reduced, and the production efficiency of the prefabricated hollow part is ensured.
预制构件界面直剪加强型竖孔、带有该竖孔的预制构件及其制备，在预制空心构件竖孔钢筋搭接区段下部改变竖孔截面尺寸，在竖孔内壁形成锥台或凸台。锥台可在竖向钢筋受拉时增大新旧混凝土界面的正应力，进而通过摩擦作用提高竖孔新旧混凝土界面的剪力传递能力；凸台位置可通过新旧混凝土的咬合作用提高竖孔新旧混凝土界面的剪力传递能力。本发明可避免在预制空心构件竖孔内设置水洗粗糙面或键槽来改善界面剪力传递能力，同时本发明锥台或凸台可采用配套的竖孔芯模一次整体抽芯形成或采用管道占位形成，无需采用复杂机械设备，可降低生产设备的故障率，保证预制空心构件生产效率。
Prefabricated part interface direct shear reinforced vertical hole, prefabricated part with vertical hole and preparation thereof
预制构件界面直剪加强型竖孔、带有该竖孔的预制构件及其制备
HAN WENLONG (author) / XIAO MING (author) / YU YINQUAN (author)
2021-09-17
Patent
Electronic Resource
Chinese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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