Query：
学者姓名：沈圣
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
The excessive enhancement of rotational stiffness leads to an uneven distribution of rotational stiffness across the entire timber frame. This uneven distribution concentrates the load effect on the strengthened mortise–tenon joints (MJs), causing localized failure in advance. To address this issue, a reversible and non-destructive strengthening method for the damaged MJs is devised, involving the utilization of an assembled spring-steel hoop. The rotational stiffness of a strengthened MJ is derived from the springs that link the steel hoop of the beam and column, resembling the rotational stiffness of an intact MJ. A comparison of the measured moment-rotation curves of various types of MJ reveals that the rotational stiffness similarity necessitates the strengthened MJ's yield moment and ultimate moment, along with the associated rotation angles, to closely resemble those of the intact MJ. Secondly, a design methodology is developed for the assembled spring-steel hoop, which involves determining the parameters of the connecting spring. The comparative analysis of the hysteretic test results on multiple strengthened and intact MJs indicates that the strengthened MJs exhibit rotational stiffness deviations of less than 12.2 % during the elasticity stage and 6.6 % during the plasticity stage, in comparison to the intact MJs. A spring exhibits a lower ultimate extension compared to timber, leading to a maximum discrepancy of 37.5 % in the ductility coefficients between the strengthened MJs and intact MJs. The strengthened and intact MJs display similar patterns of stiffness reduction and energy dissipation progression. © Elsevier Ltd
Keyword ：
Design Design Energy dissipation Energy dissipation Nondestructive examination Nondestructive examination Stiffness Stiffness Strengthening (metal) Strengthening (metal) Timber Timber
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shen, Sheng , Sun, Yu , Wang, Yao et al. Damaged mortise–tenon joint strengthened using an assembled spring–steel hoop based on a design of similar rotational stiffness [J]. | Journal of Building Engineering , 2024 , 95 . |
| MLA | Shen, Sheng et al. "Damaged mortise–tenon joint strengthened using an assembled spring–steel hoop based on a design of similar rotational stiffness" . | Journal of Building Engineering 95 (2024) . |
| APA | Shen, Sheng , Sun, Yu , Wang, Yao , Qi, Yajun , Jiang, Shaofei , Fu, Xufeng et al. Damaged mortise–tenon joint strengthened using an assembled spring–steel hoop based on a design of similar rotational stiffness . | Journal of Building Engineering , 2024 , 95 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Due to the low strength and poor durability of plain soil, and the roughly⁃ estimated proportion of modified materials determined from craftsman’ s experience, the surface of rammed earth (RE) is always susceptible to cracking and spalling. Hence, the mix proportion of modified RE (MRE) shall be designed based on the parameters of actual soil and reasonable testing method. Most existing studies are limited to obtaining a single performance index⁃based optimum mix proportion of MRE. However, the mix proportion of actual MRE shall be optimized by synchronously considering multiple mechanical and durability indexes, and meanwhile the relative importance of variables in different regions and climatic conditions shall be evaluated. Furthermore, in the existing researches, only the optimum group is determined from several predefined mix proportions, which is different from the optimum mix proportion within the preset content range of the modified material. In this work, a design method of determining the optimum mix proportion of MRE is proposed by combining the mechanical and durability performance indexes. The design method includes 1) selection principles of earth material and identification method of soil properties; 2) a multi⁃indexes⁃based comprehensive weighting method of MRE; 3) comparison and optimization of the mix proportion of modified MRE based on weighted score and regression analysis. The proposed method screens out the appropriate mix proportion of MRE by adjusting the index weight according to the varying importance of indexes. Through the optimized design, the optimum mix proportion of each modified material within the preset content range can be acquired. Based on the designed example, it is validated that the optimum mix proportion of MRE can indeed be determined by the proposed method. © 2024 Chinese Society of Civil Engineering. All rights reserved.
Keyword ：
Design Design Durability Durability Regression analysis Regression analysis Soils Soils Soil testing Soil testing
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shen, Sheng , Sun, Yu , Wang, Yao et al. Design method for optimum mix proportion of modified rammed earth based on combination of mechanical and durability performance indexes [J]. | China Civil Engineering Journal , 2024 , 57 (5) : 1-14 . |
| MLA | Shen, Sheng et al. "Design method for optimum mix proportion of modified rammed earth based on combination of mechanical and durability performance indexes" . | China Civil Engineering Journal 57 . 5 (2024) : 1-14 . |
| APA | Shen, Sheng , Sun, Yu , Wang, Yao , Jiang, Shaofei , Zhang, Ying , Fu, Xufeng et al. Design method for optimum mix proportion of modified rammed earth based on combination of mechanical and durability performance indexes . | China Civil Engineering Journal , 2024 , 57 (5) , 1-14 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
素土强度低、耐久性差且各改性材料掺量往往由工匠凭经验大致确定，导致夯土表面时常容易开裂剥落，故应根据现场土质状况以及合理试验方法来设计夯土改性配比。现有研究大都局限于单一性能指标最优的配比，而现实中夯土既要考虑针对多项力学性能指标与耐久性能指标的同步优化，还要考虑不同地域与气候条件下各指标的重要性不同。另外，现有研究仅能确定若干预设配比中的最优组，而非改性材料预设掺量范围内的最优配比。为此，文章提出一种基于力学性能指标与耐久性能指标联合的夯土改性配比优化设计方法，其包括：(1)土料选用原则与土质鉴定方法；(2)考虑夯土多性能指标的综合赋权方法；(3)基于加权评分和回归分析的夯土改性配比综合比选与优化方法。文章方法通过调整指标权重筛选出适应指标重要性不同时的夯土改性配比，并通过优化设计获得各改性材料预设掺量范围内的最优配比。最后通过设计实例证明了文章方法的确可得到最优的夯土改性配比。
Keyword ：
优化设计 优化设计 多性能指标 多性能指标 夯土 夯土 权重系数 权重系数 配比 配比
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 沈圣 , 孙宇 , 王耀 et al. 基于力学性能指标与耐久性能指标联合的夯土改性配比优化设计方法 [J]. | 土木工程学报 , 2024 , 57 (05) : 1-14 . |
| MLA | 沈圣 et al. "基于力学性能指标与耐久性能指标联合的夯土改性配比优化设计方法" . | 土木工程学报 57 . 05 (2024) : 1-14 . |
| APA | 沈圣 , 孙宇 , 王耀 , 姜绍飞 , 张鹰 , 付绪峰 et al. 基于力学性能指标与耐久性能指标联合的夯土改性配比优化设计方法 . | 土木工程学报 , 2024 , 57 (05) , 1-14 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This study developed a sonar scanning scheme for underwater high-rise pile cap foundations (HRPCFs) to improve the efficiency of bridge inspection and prolong structural durability. First, two key factors in the measurement point arrangement that significantly affect the accuracy of sonar measurement-the appropriate range of measurement distance and the pitch angle-were determined experimentally. Subsequently, an assembled platform was designed to firmly hold the sonar and conveniently move it under strong currents to effectively provide clear images of the pile. A strategy was developed to determine the appropriate number and horizontal and vertical positions of the measurement points around each pile in the pile group, particularly to avoid the obstruction of signal propagation caused by adjacent piles and pile caps. The method was applied to the scanning of an underwater high-rise pile cap foundation of a bridge, and the results showed that the scanning ranges of the imaging sonar at all arranged measurement points were not affected by adjacent piles. The imaging sonar carried by the proposed platform could obtain clear images stably at a water speed of similar to 2.0 m/s and obtain all surface data of the pile quickly and completely.
Keyword ：
bridge pile bridge pile imaging sonar imaging sonar inspection inspection measuring point arrangement measuring point arrangement sonar-carried platform sonar-carried platform
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shen, Sheng , Cao, Zheng , Lai, Changqin . Scanning Scheme for Underwater High-Rise Pile Cap Foundation Based on Imaging Sonar [J]. | SUSTAINABILITY , 2023 , 15 (8) . |
| MLA | Shen, Sheng et al. "Scanning Scheme for Underwater High-Rise Pile Cap Foundation Based on Imaging Sonar" . | SUSTAINABILITY 15 . 8 (2023) . |
| APA | Shen, Sheng , Cao, Zheng , Lai, Changqin . Scanning Scheme for Underwater High-Rise Pile Cap Foundation Based on Imaging Sonar . | SUSTAINABILITY , 2023 , 15 (8) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Three-dimensional (3-D) reconstruction based on sonar imaging is an intuitive and comprehensible form for describing an underwater defective pile. Most existing 3-D reconstruction methods are inefficient as they require the extraction of numerous feature points from many sonar images. A rapid 3-D reconstruction method for underwater defective piles based on two-dimensional (2-D) images obtained using mechanically scanned imaging sonar (MSIS) is proposed herein. First, the correspondences between the geometric features of MSIS images and actual defects are established based on the mapping relationship between actual object and MSIS image. Subsequently, no more than three feature points are extracted from 2-D MSIS images to recognize the contour segments. The contour segments are assembled into the entire cross section and then into the entire defective pile. The applicability of the proposed method is verified via a 3-D reconstruction for a scaled-down pile with multiple defect distributions.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shen, Sheng , Zeng, Yamian , Lai, Changqin et al. Rapid Three-Dimensional Reconstruction of Underwater Defective Pile Based on Two-Dimensional Images Obtained Using Mechanically Scanned Imaging Sonar [J]. | STRUCTURAL CONTROL & HEALTH MONITORING , 2023 , 2023 . |
| MLA | Shen, Sheng et al. "Rapid Three-Dimensional Reconstruction of Underwater Defective Pile Based on Two-Dimensional Images Obtained Using Mechanically Scanned Imaging Sonar" . | STRUCTURAL CONTROL & HEALTH MONITORING 2023 (2023) . |
| APA | Shen, Sheng , Zeng, Yamian , Lai, Changqin , Jiang, Shaofei , Wu, Shaofen , Ma, Shenglan . Rapid Three-Dimensional Reconstruction of Underwater Defective Pile Based on Two-Dimensional Images Obtained Using Mechanically Scanned Imaging Sonar . | STRUCTURAL CONTROL & HEALTH MONITORING , 2023 , 2023 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In essence, safety evaluation of damaged mortise-tenon joints (MJs) involves checking whether the joints have sufficient residual bearing capacity. However, the load, which is necessary in the calculation process, is difficult to observe in practice, resulting in insufficient reliability of the evaluation results. Thus, this study proposes the concept of a margin of bearing capacity (MBC) of an MJ and presents a calculation method for assessing the safety of one-way straight mortise-tenon joints (OSMJs). In the calculating process, the load was replaced with the observed apparent damage and rotation angle. First, the MBC includes the influence of joint damage and rotation angle on the residual moment bearing capacity of the joint. Second, the apparent damage to an OSMJ is simplified to average section loss rates in the height and width directions, which reduces the amount and dif-ficulty of data acquisition. Third, the damage model of an OSMJ included in the proposed calculation method establishes the transforming relationship between the measured average section loss rate and the damage setting on the model, and avoids the influence of uneven distribution of the actual size reduction on the calculation of the residual moment bearing capacity. The results of unidirectional pushover tests of several damaged and intact OSMJ models showed that most absolute errors between the calculated and measured MBCs were less than 0.04, indicating the accuracy of the proposed method for practical safety assessment of damaged OSMJs.
Keyword ：
Damaged joint Damaged joint Margin of bearing capacity Margin of bearing capacity Mortise -tenon joint Mortise -tenon joint Rotation angle Rotation angle Safety assessment Safety assessment
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shen, Sheng , Sun, Yu , Wang, Yao et al. Margin of bearing capacity of one-way straight mortise-tenon joints based on inspection of apparent damage and rotation angle [J]. | STRUCTURES , 2023 , 59 . |
| MLA | Shen, Sheng et al. "Margin of bearing capacity of one-way straight mortise-tenon joints based on inspection of apparent damage and rotation angle" . | STRUCTURES 59 (2023) . |
| APA | Shen, Sheng , Sun, Yu , Wang, Yao , Dong, Zitao , Zhang, Ying , Fu, Xufeng et al. Margin of bearing capacity of one-way straight mortise-tenon joints based on inspection of apparent damage and rotation angle . | STRUCTURES , 2023 , 59 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
一种基于机械扫描成像声呐的桥墩基础周边冲刷区域三维(3D)地形重建方法，包括利用来自不同方位的声呐对桥墩基础周边冲刷区域的整体地形进行扫描，获取基础冲刷地形的n幅声呐图像； 从相同距离的每个所获取的声纳图像中截取多个分析截面； 提取所述图像中的每个所述分析截面中的地形成像条带上的上边缘和下边缘的关键参数，并将提取的参数变换到3D空间，所述声纳的扇形波束表面用扇形弧表示； 在所述分析部分中识别冲刷地形轮廓； 逐个识别地形轮廓，分别提取空间分散的3D坐标数据； 以及对所述空间散射数据进行插值拟合，从而实现对地基冲刷地形的3D重建。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shaofei Jiang , Sheng Shen , Jianteng Chen et al. 基于机扫成像声呐的桥墩基础周围冲刷区三维(3D)地形重建方法 : US17700293[P]. | 2022-03-21 00:00:00 . |
| MLA | Shaofei Jiang et al. "基于机扫成像声呐的桥墩基础周围冲刷区三维(3D)地形重建方法" : US17700293. | 2022-03-21 00:00:00 . |
| APA | Shaofei Jiang , Sheng Shen , Jianteng Chen , Zheng Cao , Mingxian Li . 基于机扫成像声呐的桥墩基础周围冲刷区三维(3D)地形重建方法 : US17700293. | 2022-03-21 00:00:00 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Given that the existing drainage strengthening methods for underwater damaged piers are expensive, inefficient, and cause shipping traffic disruptions, an urgent need exists to explore undrained strengthening methods, such as the precast concrete segment assembly method (PCSAM). However, the PCSAM has certain limitations, including a considerable strength loss of filled concrete, poor accuracy, poor connection performance of the segment sleeves, etc. Hence, this study developed an improved PCSAM (IPCSAM) by adopting self-stressed anti-washout concrete (SSAWC) as the filling material and developing a lining concrete segment sleeve (LCSS) based on the design principle of shield tunnel lining segments. Subsequently, the seismic performance of the strengthened piers was investigated. First, nine 1/5-scale pier column specimens were designed by considering different influencing factors: the self-stress of the SSAWC, LCSS reinforcement ratio, and initial damage and length-diameter ratio of the pier column. These specimens were tested under low reversed cyclic loading. Second, an extended parameter analysis was performed based on the established numerical models consistent with the quasi-static test's parameter settings. Finally, a restoring force model of the strengthened piers, including the trilinear skeleton curve model and hysteresis curve model, was established based on the results of the quasi-static test and parameter analysis. The results indicated that the bearing capacity, ductility, and initial stiffness of the specimens strengthened using the IPCSAM increased by approximately 83.5-106.4%, 16.3-50.2%, and 83.9-177.3%, respectively, with the energy dissipation capacity also significantly improved. The self-stress of the SSAWC should not exceed 2.2 MPa, and the recommended ratio of the LCSS thickness to pier column diameter is 1/10. Additionally, the proposed restoring force model is highly accurate and applicable, able to provide a reference for the practical seismic strengthening design of piers.
Keyword ：
quasi-static test quasi-static test segment assembly segment assembly seismic performance seismic performance self-stressed anti-washout concrete self-stressed anti-washout concrete underwater concrete pier underwater concrete pier undrained strengthening undrained strengthening
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Sun, Yu , Xu, Wansong , Shen, Sheng . Experimental Studies on the Seismic Performance of Underwater Concrete Piers Strengthened by Self-Stressed Anti-Washout Concrete and Segments [J]. | APPLIED SCIENCES-BASEL , 2023 , 13 (21) . |
| MLA | Sun, Yu et al. "Experimental Studies on the Seismic Performance of Underwater Concrete Piers Strengthened by Self-Stressed Anti-Washout Concrete and Segments" . | APPLIED SCIENCES-BASEL 13 . 21 (2023) . |
| APA | Sun, Yu , Xu, Wansong , Shen, Sheng . Experimental Studies on the Seismic Performance of Underwater Concrete Piers Strengthened by Self-Stressed Anti-Washout Concrete and Segments . | APPLIED SCIENCES-BASEL , 2023 , 13 (21) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
本申请公开了一种用于木结构残损榫卯节点的加固结构，涉及古建筑加固的技术领域，包括第一替代件、第二替代件、第一加固组件以及第二加固组件；所述第一加固组件包括第一加固套，所述第一加固套套设于所述第一替代件上；所述第二加固组件包括第二加固套、若干螺栓、若干螺母以及若干弹簧，所述第二加固套套设于所述第二替代件上，且所述第二加固套与所述第一加固套连接；若干所述螺栓均穿设于所述第二加固套上以及所述第二替代件上，且所述螺母与对应所述螺栓的尾部螺纹配合；若干所述弹簧分别位于所述第二加固套的两侧。本申请能够保证残损榫卯节点加固后的木结构整体刚度仍均匀分布，提高对木结构的加固效果，从而能够更好地保护古建筑。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 沈圣 , 潘智展 , 孙宇 et al. 一种用于木结构残损榫卯节点的加固结构 : CN202321401778.4[P]. | 2023-06-05 00:00:00 . |
| MLA | 沈圣 et al. "一种用于木结构残损榫卯节点的加固结构" : CN202321401778.4. | 2023-06-05 00:00:00 . |
| APA | 沈圣 , 潘智展 , 孙宇 , 张晓华 , 周迎风 , 洪秋萍 . 一种用于木结构残损榫卯节点的加固结构 : CN202321401778.4. | 2023-06-05 00:00:00 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
基于层次分析法的桥梁水下桩基传统安全评估方法中,用于确定权重的判断矩阵中各数值完全由专家经验确定,导致评估结果主观性过大.为此,在福建省桥梁水下桩基检测数据基础上,提出结合熵权法计算得到客观权重,对传统安全评估方法进行改进.首先,基于现有规范和水下桩基病害特点建立多层次安全评估模型;其次,分别采用层次分析法和熵权法计算各评估指标的主、客观权重值,并将其组合确定指标的综合权重,该方法克服了传统层次分析法单独使用时仅通过主观经验确定病害权重值的局限性.最后,以福州市某桥为例对其水下桩基进行评估,验证了该评估方法的合理性和实用性.
Keyword ：
安全评估 安全评估 层次分析法 层次分析法 桥梁水下桩基 桥梁水下桩基 熵权法 熵权法
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 吴晓笑 , 沈圣 , 麻胜兰 et al. 熵权法确定病害权重的桥梁水下桩基安全评估改进方法 [J]. | 福州大学学报(自然科学版) , 2022 , 50 (01) : 111-119 . |
| MLA | 吴晓笑 et al. "熵权法确定病害权重的桥梁水下桩基安全评估改进方法" . | 福州大学学报(自然科学版) 50 . 01 (2022) : 111-119 . |
| APA | 吴晓笑 , 沈圣 , 麻胜兰 , 姜绍飞 , 林晓威 , 刘发水 et al. 熵权法确定病害权重的桥梁水下桩基安全评估改进方法 . | 福州大学学报(自然科学版) , 2022 , 50 (01) , 111-119 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
