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A platform for research: civil engineering, architecture and urbanism
STRENGTH DETERMINATION METHOD OF FOOT PROTECTION PORTION
To provide a strength determination method of a foot protection portion which can more accurately determine whether a foot protection portion satisfies required compression strength regardless of an amount of excavated sediment included in a sample.SOLUTION: A strength determination method comprises: a first step of collecting a constituent of a layer 12 as first sample from the layer 12 in which a foot protection portion 32 in a subsoil is formed; a second step of producing and solidifying a plurality of kinds of cement milks including the first sample as an aggregate, and obtaining a relational expression between cement-water ratio and compression strength of the cement milk including the first sample as the aggregate from cement-water ratio and compression strength after solidification of the cement milks; a third step of injecting the cement milk 21 into a bottom portion of an excavated pile hole 1, and collecting the injected cement milk 21 as second sample; a fourth step of obtaining a moisture content of a test body; fifth step of obtaining a cement content to be included in the test body; and a sixth step of determining whether a cement content included in the test body satisfies the cement content obtained in the fifth step.SELECTED DRAWING: Figure 2
【課題】試料内に含まれる掘削土砂の量に関わらず、より正確に根固め部が必要圧縮強度を満たすかを判定可能な根固め部の強度判定方法を提供する。【解決手段】地盤の根固め部３２が形成される層１２から層１２の構成物を第一の試料として採取する第一の工程と、第一の試料を骨材として含むセメントミルクを複数種類生成して固化させ、それらセメントミルクのセメント水比と固化後の圧縮強度とから、第一の試料を骨材として含むセメントミルクのセメント水比と圧縮強度との関係式を求める第二の工程と、掘削した杭穴１の底部にセメントミルク２１を注入し、注入後のセメントミルク２１を第二の試料として採取する第三の工程と、試験体の含有水分量を求める第四の工程と、試験体中に含まれるべきセメント量を求める第五の工程と、試験体中に含まれるセメント量が第五の工程で求めたセメント量を満たしているか判定する第六の工程と、を含む。【選択図】図２
STRENGTH DETERMINATION METHOD OF FOOT PROTECTION PORTION
To provide a strength determination method of a foot protection portion which can more accurately determine whether a foot protection portion satisfies required compression strength regardless of an amount of excavated sediment included in a sample.SOLUTION: A strength determination method comprises: a first step of collecting a constituent of a layer 12 as first sample from the layer 12 in which a foot protection portion 32 in a subsoil is formed; a second step of producing and solidifying a plurality of kinds of cement milks including the first sample as an aggregate, and obtaining a relational expression between cement-water ratio and compression strength of the cement milk including the first sample as the aggregate from cement-water ratio and compression strength after solidification of the cement milks; a third step of injecting the cement milk 21 into a bottom portion of an excavated pile hole 1, and collecting the injected cement milk 21 as second sample; a fourth step of obtaining a moisture content of a test body; fifth step of obtaining a cement content to be included in the test body; and a sixth step of determining whether a cement content included in the test body satisfies the cement content obtained in the fifth step.SELECTED DRAWING: Figure 2
【課題】試料内に含まれる掘削土砂の量に関わらず、より正確に根固め部が必要圧縮強度を満たすかを判定可能な根固め部の強度判定方法を提供する。【解決手段】地盤の根固め部３２が形成される層１２から層１２の構成物を第一の試料として採取する第一の工程と、第一の試料を骨材として含むセメントミルクを複数種類生成して固化させ、それらセメントミルクのセメント水比と固化後の圧縮強度とから、第一の試料を骨材として含むセメントミルクのセメント水比と圧縮強度との関係式を求める第二の工程と、掘削した杭穴１の底部にセメントミルク２１を注入し、注入後のセメントミルク２１を第二の試料として採取する第三の工程と、試験体の含有水分量を求める第四の工程と、試験体中に含まれるべきセメント量を求める第五の工程と、試験体中に含まれるセメント量が第五の工程で求めたセメント量を満たしているか判定する第六の工程と、を含む。【選択図】図２
STRENGTH DETERMINATION METHOD OF FOOT PROTECTION PORTION
根固め部の強度判定方法
YODA YUYA (author) / KIYOMURA SHUNSUKE (author) / ASAKA MIHARU (author)
2018-12-20
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
FOUNDATION FOOT PROTECTION STRUCTURE, AND FOUNDATION FOOT PROTECTION METHOD
| European Patent Office | 2021