Urban land use and building intensity are often planned without a direct, auditable link to network accessibility, limiting ex-ante policy evaluation. This study asks whether multi-radius street centralities can be elevated from diagnosis to design lever to allocate land use and floor area in a transparent, optimization-ready workflow. We introduce a three-stage pipeline that connects configuration to program and intensity. First, multi-radius accessibility is computed on the street network and translated to blocks to provide scale-legible measures of reach. Second, these measures structure nested service basins that guide a rule-based placement of land uses with explicit priorities and minimum parcel footprints, ensuring reproducibility. Third, within each use, floor-area ratio (FAR) is assigned by an accessibility-weighted linear model that satisfies global construction totals while anchoring the average FAR, thereby tilting height toward better-connected blocks without pathological extremes. The framework supports multi-objective policy search via sampling and Pareto screening. Applied to a real urban district, the workflow reproduces corridor-biased commercial siting and industrial belts while concentrating intensity on highly connected blocks. Policy sampling via multi-objective screening yields Pareto-efficient plans that reconcile accessibility gains with deviations from target land-share and construction-share structures. The contribution is twofold: methodologically, it translates familiar space-syntax measures into cluster-aware, rule-governed land-use and FAR assignment with explicit guarantees (scale-legible radii, parcel minima, and an average-FAR anchor). Practically, it offers planners a transparent instrument for counterfactual testing and negotiated trade-offs at neighborhood/district/city scales.

翻译：城市土地利用与建筑强度规划往往缺乏与路网可达性直接、可追溯的关联，限制了政策的事前评估。本研究探讨是否可将多半径街道中心性指标从诊断工具提升为设计杠杆，通过透明且支持优化的流程来分配土地利用与建筑面积。我们提出一个连接空间构型、功能布局与开发强度的三阶段流程：首先，基于街道网络计算多半径可达性并将其转换至街区尺度，提供尺度可辨的覆盖范围测度；其次，这些测度构建嵌套服务区，以明确的优先级与最小宗地面积为约束，通过规则驱动的方式指导土地利用布局，确保结果可复现；第三，在各类用地内部，通过可达性加权的线性模型分配容积率（FAR），在满足总体建设总量的同时锚定平均容积率，从而使建筑高度向连通性更优的街区倾斜，避免极端值出现。该框架支持通过抽样与帕累托筛选进行多目标政策寻优。在实际城区案例中，本工作流复现了沿廊道布局的商业选址与工业带特征，同时将开发强度集中于高连通性街区。通过多目标筛选的政策抽样可产生帕累托最优方案，在提升可达性的同时兼顾与目标用地结构及建设量结构的偏差。本研究的贡献体现在两方面：方法论上，将经典空间句法测度转化为具有聚类感知、规则约束的土地利用与容积率分配框架，并提供明确保障（尺度可辨的半径、宗地最小面积及平均容积率锚定）；实践上，为规划者提供了在街区/片区/城市尺度进行反事实检验与协商权衡的透明工具。