A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CALCULATION METHOD OF DRAWING RESISTANCE FORCE AT KNOTTED PART OF KNOTTED PILE
To provide a calculation method of drawing resistance force at a knotted part of a knotted pile allowing the drawing resistance force at the knotted part of the knotted pile to be calculated where a penetration depth of the knotted part is so shallow that a fracture surface reaching the ground surface from the knotted part is generated in the ground when drawing force acts upon the knotted pile made of concrete injected at the site.SOLUTION: A calculation method of drawing resistance force at a knotted part of a knotted pile calculates the drawing resistance force of the knotted part at the knotted pile provided with a shaft part and the knotted part arranged on the shaft part based on shearing resistance force of a cylindrical fracture surface reaching the ground surface from the knotted part which is generated in the ground, and soil lump weight between the fracture surface and the shaft, wherein an object range on which the shearing resistance force on the fracture surface is calculated is divided to a knotted part section adjacent to the knotted part and a shaft part section adjacent to the shaft part to increase soil pressure factor corresponding to the knotted part section further to soil pressure factor corresponding to the shaft part section.SELECTED DRAWING: Figure 7
【課題】場所打ちコンクリート造の節付き杭に引抜き力が作用した際、節部から地表面に達する破壊面が地盤中に発生する程度に節部の根入れが浅い場合にも、節部の引抜き抵抗力を算定することの可能な、節付き杭の節部における引抜き抵抗力の算定方法を提供する。【解決手段】軸部と、該軸部に設けた節部とを備える節付き杭における前記節部の引抜き抵抗力を、地盤に発生する節部から地表面に達する円筒状の破壊面のせん断抵抗力、及び前記破壊面と前記軸部との間の土塊重量に基づいて算定する、節付き杭の節部における引抜き抵抗力の算定方法であって、前記破壊面における前記せん断抵抗力を算出する対象範囲を、前記節部と隣接する節部区間と、前記軸部に隣接する軸部区間に区分し、前記節部区間に対応する土圧係数を、前記軸部区間に対応する土圧係数より割増する。【選択図】図７
CALCULATION METHOD OF DRAWING RESISTANCE FORCE AT KNOTTED PART OF KNOTTED PILE
To provide a calculation method of drawing resistance force at a knotted part of a knotted pile allowing the drawing resistance force at the knotted part of the knotted pile to be calculated where a penetration depth of the knotted part is so shallow that a fracture surface reaching the ground surface from the knotted part is generated in the ground when drawing force acts upon the knotted pile made of concrete injected at the site.SOLUTION: A calculation method of drawing resistance force at a knotted part of a knotted pile calculates the drawing resistance force of the knotted part at the knotted pile provided with a shaft part and the knotted part arranged on the shaft part based on shearing resistance force of a cylindrical fracture surface reaching the ground surface from the knotted part which is generated in the ground, and soil lump weight between the fracture surface and the shaft, wherein an object range on which the shearing resistance force on the fracture surface is calculated is divided to a knotted part section adjacent to the knotted part and a shaft part section adjacent to the shaft part to increase soil pressure factor corresponding to the knotted part section further to soil pressure factor corresponding to the shaft part section.SELECTED DRAWING: Figure 7
【課題】場所打ちコンクリート造の節付き杭に引抜き力が作用した際、節部から地表面に達する破壊面が地盤中に発生する程度に節部の根入れが浅い場合にも、節部の引抜き抵抗力を算定することの可能な、節付き杭の節部における引抜き抵抗力の算定方法を提供する。【解決手段】軸部と、該軸部に設けた節部とを備える節付き杭における前記節部の引抜き抵抗力を、地盤に発生する節部から地表面に達する円筒状の破壊面のせん断抵抗力、及び前記破壊面と前記軸部との間の土塊重量に基づいて算定する、節付き杭の節部における引抜き抵抗力の算定方法であって、前記破壊面における前記せん断抵抗力を算出する対象範囲を、前記節部と隣接する節部区間と、前記軸部に隣接する軸部区間に区分し、前記節部区間に対応する土圧係数を、前記軸部区間に対応する土圧係数より割増する。【選択図】図７
CALCULATION METHOD OF DRAWING RESISTANCE FORCE AT KNOTTED PART OF KNOTTED PILE
節付き杭の節部における引抜き抵抗力の算定方法
SUZUKI NAOKO (author)
2021-10-28
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
TUBE FOR CONSTRUCTING KNOTTED PILE OF CAST-IN-PLACE CONCRETE
| European Patent Office | 2016